Complete List of Dinosaurs that Start With A Plus Fun Facts

Are you ready to stomp into the world of some incredible creatures that lived a long, long time ago? We’re going to explore dinosaurs that start with A. These dinosaurs might not be as famous as the T-Rex, but they are just as amazing and interesting. So, let’s put on our explorer hats and dig into some awesome dino facts with dinosaurs that start with A!

Did you know that the names of dinosaurs can tell us a lot about them? Many dinosaur names, especially those dinosaurs that start with A, come from Greek or Latin words. These names can describe their size, what they ate, or even where they were found. It’s like each name is a mini-story about the dinosaur!

For example, did you know that one of the dinosaurs that starts with A is the Allosaurus? The name Allosaurus means “different lizard.” It was given this name because its bones were different from other dinosaur bones found at that time. The Allosaurus was a big, meat-eating dinosaur that walked on two legs and had really sharp teeth!

Another cool dinosaur that starts with A is the Apatosaurus. You might know it by another name – Brontosaurus. Apatosaurus means “deceptive lizard.” It was huge, almost as long as a basketball court, and it ate plants. Imagine seeing one of those in your backyard!

Are you ready to roar into more fascinating facts about dinosaurs that start with A? From the agile Ankylosaurus to the enormous Argentinosaurus, there’s so much to learn about these ancient giants. Let’s keep digging and discover the amazing world of dinosaurs that start with A!

Discover about Dinosaurs that start with A!

• Common Dinosaur that start with A
• Complete list of Dinosaurs that start with A
• Facts about Dinosaurs that Start with A

Ready to discover more dinosaurs? Check out our complete list of dinosaurs that start with B and our complete list of dinosaurs that start with C.

Common Dinosaurs That Start with A

Common dinosaurs that start with A include:

1. Allosaurus: A large carnivorous dinosaur known for its massive skull and sharp teeth.
2. Apatosaurus: A giant herbivorous dinosaur with a long neck and tail, formerly known as Brontosaurus.
3. Ankylosaurus: A heavily armored dinosaur with a club-like tail, known for its protective bony plates.
4. Albertosaurus: A relative of Tyrannosaurus, this carnivorous dinosaur was smaller but still formidable.
5. Archaeopteryx: Often considered the first bird, this small dinosaur had feathered wings.
6. Achelousaurus: A herbivorous ceratopsian dinosaur, known for its strange bony knobs and ridges on its skull.
7. Australovenator: A fast-moving carnivorous dinosaur known from Australia.
8. Amargasaurus: A sauropod dinosaur characterized by its distinctive row of spines along its neck and back.
9. Afrovenator: A meat-eating dinosaur from Africa, known for its agility and sharp teeth.
10. Anchisaurus: A small, early herbivorous dinosaur, one of the first sauropodomorphs.

Complete List of Dinosaurs that start with A

• Aachenosaurus
• Aardonyx
• Abelisaurus
• Abrictosaurus
• Abrosaurus
• Abydosaurus
• Acantholipan
• Acanthopholis
• Achelousaurus
• Acheroraptor
• Achillesaurus
• Achillobator
• Acristavus
• Acrocanthosaurus
• Acrotholus
• Actiosaurus
• Adamantisaurus
• Adasaurus
• Adelolophus
• Adeopapposaurus
• Adratiklit
• Adynomosaurus
• Aegyptosaurus
• Aeolosaurus
• Aepisaurus
• Aepyornithomimus
• Aerosteon
• Aetonyx
• Afromimus
• Afrovenator
• Agathaumas
• Aggiosaurus
• Agilisaurus
• Agnosphitys
• Agrosaurus
• Agujaceratops
• Agustinia
• Ahshislepelta
• Airakoraptor
• Ajancingenia
• Ajkaceratops
• Akainacephalus
• Alamosaurus
• Alaskacephale
• Albalophosaurus
• Albertaceratops
• Albertadromeus
• Albertavenator
• Albertonykus
• Albertosaurus
• Albinykus
• Albisaurus
• Alcovasaurus
• Alectrosaurus
• Aletopelta
• Algoasaurus
• Alioramus
• Aliwalia
• Allosaurus
• Almas
• Alnashetri
• Alocodon
• Altirhinus
• Altispinax
• Alvarezsaurus
• Alwalkeria
• Alxasaurus
• Amargasaurus
• Amargastegos
• Amargatitanis
• Amazonsaurus
• Ambopteryx
• Ammosaurus
• Ampelosaurus
• Amphicoelias
• Amphisaurus
• Amtocephale
• Amtosaurus
• Amurosaurus
• Amygdalodon
• Anabisetia
• Anasazisaurus
• Anatosaurus
• Anatotitan
• Anchiceratops
• Anchiornis
• Anchisaurus
• Andesaurus
• Andhrasaurus
• Angaturama
• Angloposeidon
• Angolatitan
• Angulomastacator
• Anhuilong
• Aniksosaurus
• Animantarx
• Ankistrodon
• Ankylosaurus
• Anodontosaurus
• Anomalipes
• Anoplosaurus
• Anserimimus
• Antarctopelta
• Antarctosaurus
• Antetonitrus
• Anthodon
• Antrodemus
• Anzu
• Aoniraptor
• Aorun
• Apatodon
• Apatoraptor
• Apatosaurus
• Appalachiosaurus
• Aquilarhinus
• Aquilops
• Aragosaurus
• Aralosaurus
• Archaeoceratops
• Archaeodontosaurus
• Archaeopteryx
• Archaeornis
• Archaeornithoides
• Archaeornithomimus
• Archaeovolans
• Arcovenator
• Arctosaurus
• Arcusaurus
• Arenysaurus
• Argentinosaurus
• Argyrosaurus
• Aristosaurus
• Aristosuchus
• Arizonasaurus
• Arkansaurus
• Arkharavia
• Arrhinoceratops
• Arstanosaurus
• Asiaceratops
• Asiamericana
• Asiatosaurus
• Astrodon
• Astrodonius
• Astrodontaurus
• Astrophocaudia
• Asylosaurus
• Atacamatitan
• Atlantosaurus
• Atlasaurus
• Atlascop

Facts about Dinosaurs that Start With A

• Aachenosaurus: Aachenosaurus is not actually a dinosaur, but it was once thought to be one! It was named after a place in Germany. People first thought its fossil was from a dinosaur’s jaw, but later found out it was really from a plant. Imagine the surprise!
• Aardonyx: Aardonyx was a big, plant-eating dinosaur that walked on two legs and all fours. It lived about 200 million years ago. Its name means ‘Earth Claw’ because of its big, strong claws. It was one of the early relatives of huge dinosaurs like Brachiosaurus!
• Abelisaurus: Abelisaurus was a meat-eating dinosaur with a big head and sharp teeth. It walked on two legs and hunted other dinosaurs. Its name means ‘Abel’s lizard,’ named after the discoverer. Imagine it like a smaller cousin of the famous T-Rex, but still very fierce!

• Abrictosaurus: Abrictosaurus was a small, cheerful-looking dinosaur that ate plants. It lived a very long time ago in what is now Africa. Its name means ‘awake lizard’ because its fossils were found with its mouth open as if it were yawning or smiling!
• Abrosaurus: Meet Abrosaurus, a tall dinosaur with a long neck like a giraffe. It munched on leaves from the tops of trees. Its name means ‘delicate lizard’ because its bones were quite light. It lived in Asia and was a peaceful, plant-eating giant.
• Abydosaurus: Abydosaurus was a huge dinosaur with a very long neck, like a Brachiosaurus. It lived near rivers and lakes, eating plants. Its name comes from Abydos, an ancient city, and ‘Saurus,’ which means lizard. Imagine it as a gentle giant strolling along riverbanks!
• Acantholipan: Acantholipan was a special dinosaur called an ankylosaur, known for its armor. It lived in what is now Mexico. Its body was covered in rigid, bony plates to protect it from predators. Imagine a big, walking tank from dinosaur times!
• Acanthopholis: Acanthopholis was another dinosaur with a body-like armor covered in spiky plates. It was not very big and lived in what is now England. Its name means ‘spiny scales’. It was like a small, spiky, walking fortress!
• Achelousaurus: Achelousaurus had a unique face with bumpy, knobby skin. It was a peaceful, plant-eating dinosaur. Its name comes from Achelous, a river god in Greek mythology, because of its strange-looking head. It was a part of the ceratopsian family, like Triceratops!

• Acheroraptor: Acheroraptor was a fast, bird-like dinosaur. It was small and covered in feathers. It ate meat and was quite the hunter. Its name means ‘Acheron thief’ because it was sneaky and quick. Imagine a feathery, speedy little dinosaur!
• Achillesaurus: Achillesaurus was a small, meat-eating dinosaur with long legs for running fast. It’s named after Achilles, a hero from Greek myths, because of its strong legs. It lived in South America and was quite a quick and agile hunter.
• Achillobator: Achillobator was a fierce, meat-eating dinosaur, bigger than a human. It had strong legs and sharp claws. It’s from what is now Mongolia. Imagine a big, scary, and fast hunter, always ready for action!
• Acristavus: Acristavus was a dinosaur without horns, even though it was related to famous horned dinosaurs like Triceratops. It ate plants and lived in North America. It had a large, bulky body and a beak for munching on tough leaves.
• Acrocanthosaurus: Acrocanthosaurus was a huge, meat-eating dinosaur with a tall spine along its back. It was one of the biggest predators and lived in North America. Its name means ‘high-spined lizard’. Imagine a big, fierce dinosaur with a unique, tall back!
• Acrotholus: Acrotholus was a small, dome-headed dinosaur. Its thick skull helped it defend itself. It ate plants and was pretty small, living in North America. Its name means ‘high dome,’ referring to its round, hard head.
• Actiosaurus: Actiosaurus is a bit of a mystery. Some scientists think it wasn’t a dinosaur but an ancient sea reptile. Its fossils were found in Europe. It’s a reminder that there’s still so much to learn about ancient creatures!

• Adamantisaurus: Adamantisaurus was a giant, long-necked dinosaur that munched on plants. It lived in South America and was very heavy, as big as a bus! Its name means ‘diamond lizard’ because its fossils were tough to dig up, just like diamonds.
• Adasaurus: Adasaurus was a meat-eater and a relative of the famous Velociraptor. It was fast and had sharp claws. It lived in what is now Mongolia. Imagine a sneaky hunter, always ready to pounce on its next meal!
• Adelolophus: Adelolophus is known from just a part of its jaw found in North America. It was a hadrosaur, a duck-billed dinosaur. It likely had a crest on its head and ate plants. Imagine it quacking around in ancient forests!
• Adeopapposaurus: Adeopapposaurus munched on plants and walked on four sturdy legs. It lived in South America. Its name means ‘far-eating lizard’ because it could reach high leaves with its long neck. Think of it as a gentle giant with a big appetite!

• Adratiklit: Adratiklit was a small, armored dinosaur from Africa. Its body was covered in bony plates for protection. It was like a tiny tank, roaming around and eating plants. Its name is really unique, coming from the Berber language!
• Adynomosaurus: Adynomosaurus was a big, plant-eating dinosaur with a long neck. It lived in Europe and was part of the titanosaur family, which includes some of the largest dinosaurs ever. Imagine it as a gentle giant, peacefully eating leaves.
• Aegyptosaurus: Aegyptosaurus was another giant with a long neck and tail. It lived in Africa, and its name means ‘Egypt’s lizard.’ It was a peaceful plant-eater, munching on trees and shrubs. Think of a massive, friendly dinosaur roaming the ancient lands of Egypt.
• Aeolosaurus: Aeolosaurus was a big dinosaur living in South America with a long neck and tail. It was part of the titanosaur family, and it ate plants. Its name comes from Aeolus, the ruler of the winds in Greek myths, because of its gigantic size.
• Aepisaurus: Aepisaurus is a bit of a mystery. We know it was a dinosaur with a long neck from its single arm bone found in France. It probably ate plants. Its name means ‘high lizard’. Imagine it reaching for the tallest trees!
• Aepyornithomimus: Aepyornithomimus was a fast runner, like an ostrich, living in Mongolia. It was a theropod, a group of dinosaurs that walked on two legs. It probably ate plants and insects. Think of it as the sprinter of the dinosaur world!
• Aerosteon: Aerosteon was a meat-eating dinosaur with air-filled bones, making it lighter and faster. It lived in South America. Its name means ‘air bone,’ referring to its unique skeleton. Imagine a swift and agile predator!

• Aetonyx: Aetonyx was a plant-eating dinosaur with a big body and strong legs. It lived in South Africa. Not much is known about it, but its name means ‘eagle claw’ because of its sharp toenails. Picture it as a tough, leaf-loving dinosaur.
• Afromimus: Afromimus, meaning ‘African mimic’, was a small, speedy dinosaur that lived in Africa. It had long legs for running fast and might have been covered in feathers. Imagine it dashing through the ancient landscapes like a feathered sprinter!
• Afrovenator: Afrovenator was a meat-eating dinosaur from Africa. It was a fierce hunter with sharp teeth and claws. Its name means ‘African hunter’. Picture a powerful predator, always on the lookout for its next meal.
• Agathaumas: Agathaumas was one of the first dinosaurs ever discovered in North America. It was a big, plant-eating dinosaur with a bulky body and long horns. Its name means ‘great wonder’. Imagine a gentle but impressive giant roaming around.
• Aggiosaurus: Aggiosaurus is a mystery. Some think it wasn’t a dinosaur but a marine reptile that lived in the sea. Its fossils were found in Europe. It reminds us that the ancient world was full of all kinds of amazing creatures!
• Agilisaurus: Agilisaurus was a small, agile dinosaur that could run very fast. It lived in Asia and ate plants. Its name means ‘agile lizard’. Picture it zipping around, quickly dodging bigger dinosaurs, and snacking on leaves.
• Agnosphitys: Agnosphitys was a tiny, mysterious dinosaur from what is now Europe. Not much is known about it, but it might have eaten both plants and meat. Its name means ‘unknown form’. Think of it as a little dinosaur with big secrets!
• Agrosaurus: Agrosaurus was once thought to be an Australian dinosaur, but it’s probably the same as Thecodontosaurus from England. It was a small, plant-eating dinosaur. Imagine a little herbivore happily munching on plants long ago.
• Agujaceratops: Agujaceratops was a horned dinosaur with a large frill at the back of its head. It lived in North America and ate plants. Its name means ‘horned face from Aguja.’ Picture it as a majestic, peaceful creature with impressive horns.

• Agustinia: Agustinia was a unique, long-necked dinosaur with strange spikes on its back. It lived in South America and ate plants. Its name honors the discoverer, Agustin Martinelli. Imagine a giant, gentle dinosaur with a spiky back!
• Ahshislepelta: Ahshislepelta was a small, armored dinosaur, like a mini tank. It lived in North America and had bony plates for protection. Its name honors the Ah-shi-sle-pah area where it was found. Think of a tiny, tough dinosaur with its own natural armor.
• Airakoraptor: Airakoraptor was a small, bird-like dinosaur with sharp teeth and claws. It lived in Mongolia and was a fast, agile hunter. Its name means ‘Airag thief,’ after the place where it was discovered. Picture a feathery, speedy hunter in the ancient world.
• Ajancingenia: Ajancingenia was a small, agile dinosaur that walked on two legs and lived in Mongolia. It was related to the famous Velociraptor. Imagine a tiny, speedy dinosaur with sharp claws, always ready for an adventure.
• Ajkaceratops: Ajkaceratops was a small horned dinosaur, like a mini Triceratops. It lived in what is now Hungary and ate plants. Its name honors the Ajka region where it was found. Picture a little dinosaur with cute horns and a love for leaves.

• Akainacephalus: Akainacephalus was an armored dinosaur with a bony club at the end of its tail. It lived in North America and used its club for defense. Its name means ‘thorn head’, due to its spiky skull. Imagine a walking tank with a built-in weapon!
• Alamosaurus: Alamosaurus was a giant, long-necked dinosaur that lived in North America. It was one of the last and largest of its kind, eating lots of plants. Its name means ‘Alamo lizard’, not after the famous Alamo, but a region in New Mexico.
• Alaskacephale: Alaskacephale was a small dinosaur with a thick skull. It lived in Alaska and used its hard head in battles. Its name means ‘Alaska head’. Picture a tough little dinosaur living in cold, ancient Alaska.
• Albalophosaurus: Albalophosaurus was a small dinosaur with a bird-like beak. It lived in Japan and probably ate plants and insects. Its name means ‘white crest lizard’ because of its unique head. Think of a tiny, beaked dinosaur exploring ancient forests.

• Albertaceratops: Albertaceratops was a horned dinosaur with a big nose horn and lived in Canada. It was a relative of the Triceratops and ate plants. Its name means ‘Alberta horned face’. Picture a proud dinosaur with a standout nose horn!
• Albertadromeus: Albertadromeus was a tiny, fast-running dinosaur that lived in Canada. It ate plants and could probably outrun bigger dinosaurs. Its name means ‘Alberta runner’. Imagine a speedy little dinosaur darting around the ancient landscape.
• Albertavenator: Albertavenator was a small, agile hunter from Canada. It walked on two legs and was related to the famous T-Rex. Its name means ‘Alberta hunter’. Picture a miniature T-Rex, quick on its feet and always on the lookout.
• Albertonykus: Albertonykus was a small, bird-like dinosaur with long legs for running. It lived in Canada and might have eaten insects. Its name means ‘Alberta claw.’ Imagine a tiny, fast dinosaur, like a bird, looking for bugs to snack on.
• Albertosaurus: Albertosaurus was a big, scary meat-eater and cousin to the T-Rex. It lived in Canada and had huge teeth for chomping on other dinosaurs. Its name means ‘Alberta lizard’. Think of a fierce predator roaming the ancient lands.
• Albinykus: Albinykus was a tiny, bird-like dinosaur living in Mongolia with long legs. It was fast and might have eaten insects. Its name means ‘white claw’. Picture a small, feathered dinosaur, quick and light on its feet.

• Albisaurus: Albisaurus is a mystery dinosaur, and we’re not even sure if it was a dinosaur! Its name was given to some fossils found in Europe, but much is still unknown. It’s a reminder of how much there is to discover about the past.
• Alcovasaurus: Alcovasaurus was a stegosaur, a dinosaur with plates along its back. It lived in North America and used its spiked tail for defense. Its name honors the Alcova Formation, where it was found. Picture a spiky, plate-covered dinosaur, ready to defend itself.
• Alectrosaurus: Alectrosaurus was a meat-eating dinosaur from Asia. It was a fierce hunter with strong legs and sharp teeth. Its name means ‘alone lizard’ because it was found by itself. Imagine a powerful predator, always on the prowl for its next meal.
• Aletopelta: Aletopelta was an armored dinosaur from North America. It had thick, bony plates and a heavy body for protection. Its name means ‘wandering shield,’ because its fossils were found scattered. Think of a slow-moving, heavily armored plant-eater.
• Algoasaurus: Algoasaurus was a long-necked dinosaur from South Africa. It was a plant-eater and one of the few dinosaurs known from that region. Its name means ‘Algoa lizard,’ after a nearby bay. Imagine a gentle giant peacefully eating plants in ancient Africa.
• Alioramus: Alioramus was a meat-eating dinosaur with a long, narrow snout and lived in Asia. It had small bumps on its skull. It wasn’t as big as some other predators, but still fierce. Its name means ‘different branch’ because it was a bit unusual.
• Aliwalia: Aliwalia was a mysterious dinosaur, and we’re unsure if it ate meat or plants. It lived in Africa, and not much is known about it. Its name comes from the Aliwal North area where it was found. It’s like a puzzle still waiting to be solved!

• Allosaurus: Allosaurus was a big, scary meat-eater with sharp teeth and claws. It lived in North America and was one of the top predators. Its name means ‘different lizard’ because it was different from other dinosaurs found at that time. Imagine a fierce, roaring dinosaur!
• Almas: Almas was a small, bird-like dinosaur that lived in Mongolia. It was covered in feathers and walked on two legs. Its name means ‘wild man’ in Mongolian. Picture a feathery, small dinosaur, almost like a bird, running around in the ancient world.
• Alnashetri: Alnashetri was a tiny dinosaur that lived in South America. It walked on two legs and was probably very fast. Its name means ‘Alnaschar’s dream,’ from a story in ‘One Thousand and One Nights.’ Imagine a little, speedy dinosaur, always on the move.
• Alocodon: Alocodon was a small dinosaur that lived in Europe. Not much is known about this dinosaur, but its teeth suggest it might have eaten tough plants or insects. Its name means ‘uneven tooth’. Picture a small, curious dinosaur exploring around.
• Altirhinus: Altirhinus was a plant-eating dinosaur with a long, high nose. It lived in Mongolia and walked on two legs. Its name means ‘high nose’. Imagine a dinosaur with a funny-looking nose munching on leaves and plants.
• Altispinax: Altispinax was a meat-eating dinosaur with tall spines on its back. It lived in Europe and was a fierce predator. Its name means ‘high spine’. Think of a scary, spiky predator, always looking for its next meal.
• Alvarezsaurus: Alvarezsaurus was a small, slim dinosaur that lived in South America. It walked on two legs and was very fast. Its name honors the historian Don Gregorio Alvarez. Picture a quick, slender dinosaur dashing through the ancient landscapes.
• Alwalkeria: Alwalkeria was a small dinosaur from India. It was one of the earliest dinosaurs and walked on two legs. Its name honors Alick Walker, a famous paleontologist. Imagine a tiny, pioneering dinosaur, one of the first of its kind!
• Alxasaurus: Alxasaurus was a long-necked dinosaur from China. It had strong arms and walked on two legs. Its name comes from the Alxa Desert. Think of a weird, long-necked dinosaur roaming the ancient deserts and looking for plants to eat.
• Amargasaurus: Amargasaurus was a long-necked dinosaur with two rows of spiky bones along its neck and back. It lived in South America and ate plants. Its name means ‘La Amarga lizard,’ after the place where it was found. Picture a giant lizard with a spiky neck!
• Amargastegos: Amargastegos is an interesting dinosaur because it might have been part stegosaur and part ankylosaur. It lived in South America. Its name combines ‘La Amarga,’ a place, and ‘stages,’ meaning roof. Imagine a dinosaur with features of two different types!
• Amargatitanis: Amargatitanis was a long-necked, plant-eating dinosaur that lived in South America. It was a titanosaur, which means it was huge! Its name means ‘La Amarga giant’. Imagine a gentle, enormous dinosaur calmly eating leaves from the tallest trees.

• Amazonsaurus: Amazonsaurus was a large, long-necked dinosaur from South America. It lived near rivers and ate plants. Its name means ‘Amazon lizard,’ after the region where it was found. Think of a massive, peaceful creature by the riverside.
• Ambopteryx: Ambopteryx was a tiny dinosaur with wings like a bat! It lived in China and could glide between trees. It ate insects and small animals. Its name means ‘both wings’ because of its unique wings. Picture a small, flying dinosaur soaring through ancient forests.
• Ammosaurus: Ammosaurus was a small, plant-eating dinosaur that walked on two legs. It lived in North America and was an early type of sauropodomorph. Its name means ‘sand lizard’ because its fossils were found in sandstone. Imagine a tiny, happy plant-eater.
• Ampelosaurus: Ampelosaurus was a large, long-necked dinosaur from Europe. It was a titanosaur and ate plants. Its name means ‘vine lizard,’ maybe because it liked eating plants like vines. Think of a giant, leaf-loving dinosaur peacefully living in ancient times.
• Amphicoelias: Amphicoelias was one of the largest dinosaurs ever! It had a super long neck and tail and lived in North America. Its name means ‘hollow on both ends’, referring to its vertebrae. Imagine an incredibly huge dinosaur, taller than trees!
• Amphisaurus: Amphisaurus is a bit of a mystery. We’re not sure what it looked like or what it ate because we only have a few fossils. Its name means ‘both lizard’. It’s like a puzzle from the past that scientists are still trying to solve.
• Amtocephale: Amtocephale was a small, dome-headed dinosaur that lived in Mongolia. It used its hard head to butt other dinosaurs. Its name means ‘Amto head,’ after the region it was found in. Imagine a tiny dinosaur with a big, tough head!
• Amtosaurus: Amtosaurus is a bit mysterious. Some think it was an armored dinosaur, but we’re unsure because we only have a few fossils. It lived in Asia. Its name means ‘Amtgay lizard’. Picture a dinosaur that’s still keeping secrets from us!
• Amurosaurus: Amurosaurus was a duck-billed dinosaur that lived in Russia. It had a flat beak and ate plants. Its name means ‘Amur lizard’, after the Amur River. Imagine a peaceful dinosaur munching on plants near a riverbank.
• Amygdalodon: Amygdalodon was one of the first long-necked dinosaurs. It lived in South America and ate plants. Its name means ‘almond tooth’, because of the shape of its teeth. Picture a big, gentle dinosaur happily eating leaves and branches.
• Anabisetia: Anabisetia was a small, plant-eating dinosaur that lived in South America. It had long legs, probably for running fast. Its name honors Ana Biset, the wife of a paleontologist. Imagine a speedy little dinosaur darting around ancient forests.
• Anasazisaurus: Anasazisaurus was a big, plant-eating dinosaur with a long, flat head. It lived in North America. Its name honors the Anasazi people, ancient Native Americans. Imagine a giant, friendly dinosaur with a unique head shape.
• Anatosaurus: Anatosaurus was a large, duck-billed dinosaur that lived in North America. It had a flat beak and a long tail. Its name means ‘duck lizard.’ Picture a gentle giant grazing in herds and making quacking sounds!
• Anatotitan: Anatotitan was another duck-billed dinosaur, very similar to Anatosaurus. It lived in North America and had a long, flat head. Its name means ‘giant duck’. Imagine a massive, peaceful dinosaur eating plants and hanging out with its dinosaur friends.
• Anchiceratops: Anchiceratops was a horned dinosaur from North America. It had a large frill and long brow horns. Its name means ‘near horned face’. Picture a majestic creature with impressive horns and peacefully eating plants.
• Anchiornis: Anchiornis was a small, feathered dinosaur that lived in China. It was covered in colorful feathers and could probably glide. Its name means ‘near bird’. Imagine a tiny, bird-like dinosaur flitting around like a colorful butterfly.
• Anchisaurus: Anchisaurus was a small, early plant-eating dinosaur that lived in North America. It walked on two legs and had a long neck. Its name means ‘near lizard’. Think of a little dinosaur exploring around, eating leaves and plants.
• Andesaurus: Andesaurus was a giant, long-necked dinosaur from South America. It was one of the huge titanosaurs and ate plants. Its name means ‘Andes lizard’, after the mountain range. Imagine a massive, gentle giant roaming the ancient Andes.
• Andhrasaurus: Andhrasaurus was a small, mysterious dinosaur from India. We know little about it, but it might have been a plant-eater. Its name means ‘Andhra Lizard,’ after the region in which it was found. It’s a reminder of how diverse dinosaurs were!
• Angaturama: Angaturama was a meat-eating dinosaur from Brazil with sharp teeth and claws. It was a fierce hunter. Its name comes from the Tupi language, meaning ‘noble.’ Imagine a proud, strong predator ruling the ancient lands.
• Angloposeidon: Angloposeidon is known from just a single neck bone found in England. It was probably a big, long-necked dinosaur. Its name means ‘English Poseidon’, after the sea god. Imagine a huge, mysterious dinosaur lost in time.
• Angolatitan: Angolatitan was a giant, long-necked dinosaur that lived in Angola, Africa. It was a titanosaur, which means it was really huge! Its name means ‘Angola giant’. Think of an enormous, peaceful dinosaur wandering around ancient African landscapes.
• Angulomastacator: Angulomastacator is a bit of a puzzle. It’s known from just a few jaw fragments found in North America. Its name means ‘angle chewer’. Picture a dinosaur with a unique way of eating, still keeping secrets from us.
• Anhuilong: Anhuilong was a long-necked, plant-eating dinosaur from China. It was a type of sauropod, which means it was pretty big. Its name means ‘Anhui dragon,’ after the province where it was found. Imagine a gentle giant peacefully grazing.
• Aniksosaurus: Aniksosaurus was a small, meat-eating dinosaur that lived in groups in South America. It had strong legs for running fast. Its name means ‘stiff lizard’. Picture a pack of tiny hunters, working together to find their next meal.
• Animantarx: Animantarx was an armored dinosaur with a thick, bony covering for protection. It lived in North America. Its name means ‘living fortress’. Imagine a walking, armored tank, calmly eating plants and not worrying about predators.
• Ankistrodon: Ankistrodon might have been a prehistoric snake, not a dinosaur. Its name means ‘hooked tooth,’ referring to its curved teeth. Imagine a slithering creature from long ago, part of the mysterious world of ancient reptiles.
• Ankylosaurus: Ankylosaurus was like a living tank covered in armor with a big club on its tail. It lived in North America and ate plants. Its name means ‘fused lizard’ because of its bony plates. Picture a tough, slow-moving dinosaur, ready to defend itself with its tail club.
• Anodontosaurus: Anodontosaurus was an armored dinosaur with a wide body and a clubbed tail. It lived in North America and used its tail for defense. Its name means ‘toothless lizard’ because it didn’t have front teeth. Imagine a heavily armored, peaceful plant-eater.
• Anomalipes: Anomalipes was a dinosaur with strange feet, which is what its name means. We don’t know much about it, as it’s known from limited fossils in Asia. Picture a dinosaur that left behind footprints unlike any other.
• Anoplosaurus: Anoplosaurus was a plant-eating dinosaur with some armor. It lived in Europe and had a long, heavy body. Its name means ‘unarmed lizard,’ even though it had some armor. Think of a big, peaceful dinosaur slowly wandering around ancient forests.
• Anserimimus: Anserimimus was a fast, bird-like dinosaur that lived in Mongolia. It had long legs and might have been a good runner. Its name means ‘goose mimic’ because it resembles a goose. Picture a feathered, swift dinosaur racing across the plains.
• Antarctopelta: Antarctopelta was the first dinosaur discovered in Antarctica. It was an armored dinosaur, probably using its spikes for defense. Its name means ‘Antarctic shield’. Imagine a tough, armored dinosaur living in the cold, ancient South.
• Antarctosaurus: Antarctosaurus was a giant, long-necked dinosaur from South America, not Antarctica as its name suggests. It was a titanosaur and ate plants. Its name means ‘southern lizard’. Picture a huge, gentle giant roaming the ancient lands.
• Antetonitrus: Antetonitrus was one of the first dinosaurs to walk mostly on two legs. It lived in South Africa and ate plants. Its name means ‘before the thunder’ because it lived before giants like Brachiosaurus. Imagine a big, transitioning dinosaur experimenting with walking on two legs.
• Anthodon: Anthodon was not really a dinosaur but a reptile that lived alongside them in Africa. Its name means ‘flower tooth’ because of its unique teeth. Think of it as part of the diverse world when dinosaurs roamed the earth.
• Antrodemus: Antrodemus was once considered a meat-eating dinosaur, but now we think it was Allosaurus. Its name means ‘cave body’. It reminds us how our understanding of dinosaurs can change with discoveries.
• Anzu: Anzu was a bird-like dinosaur with a beak and feathers. It lived in North America and was a bit like a big, scary ostrich. Its name comes from a mythological bird. Picture a feathered, two-legged creature, almost like a bird but much bigger.
• Aoniraptor: The aoniraptor was a meat-eating dinosaur from South America. It was fast and agile. Its name means ‘daring thief’. Imagine a swift, cunning dinosaur, always looking for an opportunity to snatch its next meal.
• Aorun: Aorun was a small, meat-eating dinosaur that lived in China. When it died, it was a young dinosaur, so we don’t know how big it would have grown. Its name comes from a Chinese epic. Picture a tiny, fierce predator just starting its life in the ancient world.
• Apatodon: Apatodon is a bit of a mystery. It was once considered a dinosaur, but now it might not be. Its name means ‘deceptive tooth’. It’s a reminder that sometimes, fossil discoveries can lead to more questions than answers.
• Apatoraptor: Apatoraptor was a bird-like dinosaur from Canada. It had a long neck and might have been covered in feathers. Its name means ‘deceptive thief’. Picture a feathery, elegant dinosaur gracefully moving through the ancient forests.
• Apatosaurus: Apatosaurus was a giant dinosaur with a long neck and tail. It lived in North America and ate plants. Its name means ‘deceptive lizard’ because it was once confused with another dinosaur. Imagine a massive, peaceful creature calmly eating leaves from tall trees.
• Appalachiosaurus: Appalachiosaurus was a meat-eating dinosaur that lived in North America. It was a smaller cousin of the T-Rex. Its name means ‘Appalachian lizard,’ after the region where it was found. Picture a fierce predator ruling the ancient forests.
• Aquilarhinus: Aquilarhinus had a unique shovel-shaped nose and lived in North America. It was a plant-eater and might have used its nose to scoop up plants. Its name means ‘eagle nose’. Picture a dinosaur with a funny-looking nose happily shoveling up its dinner.
• Aquilops: Aquilops was a small, horned dinosaur from North America. It was an early relative of the Triceratops but much smaller. Its name means ‘eagle face’ because of its beak-like mouth. Imagine a tiny, beaked dinosaur curiously exploring around.
• Aragosaurus: Aragosaurus was a long-necked, plant-eating dinosaur that lived in Europe. It was a sauropod, meaning it was quite large. Its name means ‘Aragon lizard,’ after the region in Spain where it was found. Picture a gentle giant slowly walking through ancient landscapes.
• Aralosaurus: Aralosaurus was a duck-billed dinosaur from Kazakhstan. It had a flat beak and probably ate plants near rivers or lakes. Its name means ‘Aral Sea lizard’. Imagine a peaceful dinosaur grazing near water with its dinosaur friends.
• Archaeoceratops: Archaeoceratops was a small, horned dinosaur from China. It had a beak and probably ate plants. Its name means ‘ancient horned face’. Picture a tiny, cute dinosaur happily munching on leaves and fruits.
• Archaeodontosaurus: Archaeodontosaurus was a plant-eater living in Madagascar with a beak-like mouth. Its name means ‘ancient toothed lizard’. Imagine a dinosaur with a beak, peacefully eating plants in the lush, ancient jungles of Madagascar.
• Archaeopteryx: Archaeopteryx was a very special dinosaur because it had feathers and could fly! It lived in Germany and is one of the earliest known birds. Its name means ‘ancient wing’. Picture a small, bird-like dinosaur fluttering around ancient forests.
• Archaeornis: Archaeornis is another early bird, similar to Archaeopteryx. It shows us how dinosaurs slowly evolved into birds. Its name means ‘ancient bird’. Imagine a creature, part dinosaur, part bird, taking to the skies in a time long gone.
• Archaeornithoides: Archaeornithoides was a small, bird-like dinosaur from Mongolia. It probably ate insects. Its name means ‘ancient bird form’. Picture a tiny dinosaur, quick and nimble, hunting for bugs in the ancient underbrush.
• Archaeornithomimus: Archaeornithomimus was a fast, ostrich-like dinosaur that lived in Asia. It had long legs for running and might have eaten plants and insects. Its name means ‘ancient bird mimic’. Imagine a speedy, bird-like dinosaur racing across the plains.
• Archaeovolans: Archaeovolans was another bird-like dinosaur, showing us how dinosaurs evolved into birds. It might have been able to glide. Its name means ‘ancient flyer’. Think of a small, adventurous creature experimenting with flying in ancient skies.
• Arcovenator: Arcovenator was a meat-eating dinosaur from Europe. It was a fierce hunter with sharp teeth and claws. Its name means ‘Arc hunter’, after the region in France. Picture a powerful predator prowling through ancient forests.
• Arctosaurus: Arctosaurus was a dinosaur known from just a few fossils found in North America. We know little about it, but it might have been a plant-eater. Its name means ‘bear lizard’. Imagine a mysterious dinosaur leaving behind clues for us to discover.
• Arcusaurus: Arcusaurus was a small, early dinosaur from South Africa. It might have walked on two legs and eaten plants. Its name means ‘bow lizard,’ maybe because of its curved back. Picture a tiny, early dinosaur, just starting the long story of dinosaur evolution.
• Arenysaurus: Arenysaurus was a duck-billed dinosaur from Spain. It had a long, flat head and ate plants. Its name means ‘Arén lizard,’ after the village where it was found. Imagine a peaceful, plant-eating dinosaur living in herds and grazing in ancient landscapes.
• Argentinosaurus: Argentinosaurus was one of the largest dinosaurs ever! It was a giant, long-necked plant-eater from Argentina. Its name means ‘Argentine lizard’. Picture an enormous, gentle giant, so big that it’s hard to believe!
• Argyrosaurus: Argyrosaurus was another big, long-necked dinosaur from South America. It was a sauropod, which means it was huge and ate plants. Its name means ‘silver lizard’. Imagine a massive, leaf-eating dinosaur, calmly living in ancient times.
• Aristosaurus: Aristosaurus is a little-known dinosaur from South Africa. We only have a few bones, so we know little about it. Its name means ‘best lizard’. Picture a dinosaur that’s still mostly a mystery, waiting to tell us its story.
• Aristosuchus: Aristosuchus was a small, fast dinosaur from England. It walked on two legs and was a carnivore. Its name means ‘best crocodile,’ but it was more like a dinosaur. Imagine a small, agile hunter looking for its next meal.
• Arizonasaurus: Arizonasaurus was not a dinosaur but a reptile that lived during the time of dinosaurs. It had a tall sail on its back and lived in North America. Its name means ‘Arizona lizard’. Picture a strange, sail-backed creature roaming the ancient deserts.
• Arkansaurus: Arkansaurus was a small, bird-like dinosaur from Arkansas, USA. It had long legs and probably ran fast. Its name means ‘Arkansas lizard’. Imagine a feathered, fast-moving dinosaur dashing through the ancient landscapes of North America.
• Arkharavia: Arkharavia was a dinosaur from Mongolia. Not much is known about it, as it’s known from limited remains. Its name honors the Arkhar Mountains. Picture a dinosaur that has left us just a few clues about its life long ago.
• Arrhinoceratops: Arrhinoceratops was a horned dinosaur from North America. It had a big frill and might have lacked a nose horn, which is what its name means: ‘no nose horned face.’ Picture a giant, impressive dinosaur, part of the diverse world of horned dinosaurs.
• Arstanosaurus: Arstanosaurus was a small, plant-eating dinosaur from Kazakhstan. It might have walked on two legs and had a beak for eating plants. Its name means ‘Arstan lizard’. Picture a small, beaked dinosaur peacefully nibbling on ancient plants.
• Asiaceratops: Asiaceratops were small horned dinosaurs from Asia. It was like a mini Triceratops and ate plants. Its name means ‘Asian horned face’. Picture a tiny, horned dinosaur roaming around, looking for tasty leaves to eat.
• Asiamericana: Asiamericana is a mysterious dinosaur. We don’t know much about it, except that its fossils were found in Asia. Its name combines ‘Asia’ and ‘Americana’. Imagine a dinosaur that’s still keeping many of its secrets from us.
• Asiatosaurus: Asiatosaurus was a large, plant-eating dinosaur that lived in Asia. It was a sauropod, meaning it had a long neck and tail. Its name means ‘Asian lizard’. Imagine a giant, peaceful dinosaur wandering through ancient landscapes, munching on leaves.
• Astrodon: Astrodon was a massive, plant-eating dinosaur with a long neck and tail. It lived in North America. Its name means ‘star tooth’ because of the shape of its teeth. Picture a huge dinosaur, towering over the trees, peacefully eating plants.
• Astrodonius: Astrodonius is another name sometimes given to Astrodon, the giant plant-eater. It’s known for the same star-shaped teeth. Think of it as another way to remember a gigantic, gentle dinosaur that lived long ago.
• Astrodontaurus: Astrodontaurus was similar to Astrodon, a giant sauropod. Its name also refers to its star-shaped teeth. Picture a massive, peaceful creature strolling through ancient forests, its head high above the treetops.
• Astrophocaudia: Astrophocaudia was a long-necked dinosaur that lived in North America. It was a sauropod, so it was really big! Its name means ‘star-bearing tail,’ possibly because of the shape of its tail bones. Imagine a huge dinosaur with a long, sweeping tail grazing in ancient times.
• Asylosaurus: Asylosaurus was a small, early dinosaur from England. It walked on two legs and might have been a plant-eater. Its name means ‘sanctuary lizard’. Picture a tiny dinosaur living in a world that was just starting to see the rise of these amazing creatures.
• Atacamatitan: Atacamatitan was a giant, long-necked dinosaur from South America. It was a titanosaur, which means it was one of the biggest types of dinosaurs. Its name comes from the Atacama region. Imagine an enormous, gentle giant slowly walking through ancient landscapes.
• Atlantosaurus: Atlantosaurus was a huge, long-necked dinosaur that lived in North America. It was one of the earliest sauropods discovered. Its name means ‘Atlas lizard,’ after the Titan who held up the sky in mythology. Picture a massive, mighty dinosaur, a true giant of its time.
• Atlasaurus: Atlasaurus was a large, long-necked dinosaur from Morocco. It was a sauropod, eating plants and walking on four sturdy legs. Its name comes from the Atlas Mountains. Imagine a giant, peaceful dinosaur roaming the ancient Moroccan landscapes.
• Atlascopcosaurus: Atlascopcosaurus was a smaller, plant-eating dinosaur from Australia. It walked on two legs and had a beak for eating plants. Its name means ‘Atlas Copco lizard,’ after the company that helped in the fossil excavation. Picture a small, nimble dinosaur exploring the ancient Australian forests.
• Atrociraptor: Atrociraptor was a small, fierce, meat-eating dinosaur from North America. It had sharp teeth and was probably very fast. Its name means ‘savage thief’. Imagine a quick, agile predator, always on the lookout for its next meal.
• Atsinganosaurus: Atsinganosaurus was a long-necked, plant-eating dinosaur from Europe. It was a sauropod, so it was quite large. Its name means ‘gypsy lizard’, which is named for nomadic people. Picture a giant, roaming dinosaur peacefully grazing in ancient European landscapes.
• Aublysodon: Aublysodon was a meat-eating dinosaur, known mostly for its teeth found in North America. Its name means ‘backward-flowing tooth’. Picture a fierce dinosaur, a predator with sharp teeth, roaming the ancient lands.
• Aucasaurus: Aucasaurus was a smaller cousin of the famous Carnotaurus, a meat-eating dinosaur from South America. It had short arms and horns above its eyes. Its name means ‘Auca lizard’. Imagine a fierce, horned predator hunting in the ancient forests.
• Augustia: Augustia is a bit of a mystery. It might have been a plant-eating dinosaur, but we know little about it. Its name honors Emperor Augustus. Picture a dinosaur that’s still mostly a mystery, waiting for more discoveries to reveal its true nature.
• Augustynolophus: Augustynolophus was a duck-billed dinosaur from North America. It had a crest on its head and ate plants. Its name honors Mrs. Gretchen Augustyn. Imagine a large, friendly dinosaur with a funny-shaped head living in herds and grazing on ancient plants.
• Auroraceratops: Auroraceratops was a small, horned dinosaur from China. It walked on four legs and ate plants. Its name means ‘dawn horned face’. Picture a tiny, cute dinosaur with a beak and small horns, peacefully eating leaves.
• Aurornis: Aurornis was an early bird-like dinosaur from China. It had feathers and might have been able to glide. Its name means ‘dawn bird’. Imagine a small, feathered creature, a link between dinosaurs and birds, taking tentative flights in ancient forests.
• Australodocus: Australodocus was a long-necked, plant-eating dinosaur from Africa. It was a sauropod, so it was really big. Its name means ‘southern beam’, referring to its long neck. Picture a huge, gentle giant calmly eating leaves from the tallest trees.
• Australovenator: The Australovenator was a fast, meat-eating dinosaur from Australia. It had sharp claws and was probably a fierce hunter. Its name means ‘southern hunter’. Imagine a swift, agile predator stalking its prey in the ancient Australian wilderness.
• Austrocheirus: Austrocheirus was a meat-eating dinosaur from South America. Its name means ‘southern hand’ because of its large hands with big claws. Imagine a fierce predator using its powerful hands to catch prey in ancient forests.
• Austroposeidon: Austroposeidon was a massive, long-necked dinosaur from Brazil. It was a titanosaur, one of the largest types of dinosaurs. Its name means ‘southern Poseidon,’ named after the sea god. Picture an enormous, gentle giant towering over the trees.
• Austroraptor: The Austroraptor was a large, bird-like dinosaur from Argentina. It walked on two legs and was a fast, agile hunter. Its name means ‘southern thief’. Imagine a sleek, feathered dinosaur swiftly moving through the ancient landscapes in search of food.
• Austrosaurus: Austrosaurus was a long-necked, plant-eating dinosaur from Australia. It was a sauropod, meaning it was quite large. Its name means ‘southern lizard’. Picture a huge, peaceful dinosaur strolling through ancient forests, munching on leaves.
• Avaceratops: Avaceratops was a small, horned dinosaur from North America. It had a frill at the back of its head and probably ate plants. Its name means ‘Ava’s horned face,’ and it is named after the child of a paleontologist. Imagine a tiny, cute dinosaur peacefully grazing.
• Avalonia: Avalonia is a little-known dinosaur; we don’t know much about it. Its name might refer to an ancient landmass. Picture a dinosaur that’s still a mystery, waiting for more fossils to tell us its story.
• Avalonianus: Avalonianus is another mysterious dinosaur. Not much is known about it, but its name also refers to the ancient landmass of Avalonia. It’s a reminder of how much there’s still to discover about the world of dinosaurs.
• Aviatyrannis: Aviatyrannis was a small, early relative of the famous Tyrannosaurus rex. It lived in Europe and was probably a fast, agile hunter. Its name means ‘grandmother tyrant’. Picture a tiny, fierce predator, an early ancestor of the giant T-rex.
• Avimimus: Avimimus was a bird-like dinosaur from Mongolia. It had a beak and possibly feathers. Its name means ‘bird mimic’ because it looked like a bird. Imagine a small, feathered dinosaur, almost like a prehistoric bird, running around on two legs.
• Avipes: Avipes was a small dinosaur known only from its footprints found in Europe. Its name means ‘bird foot,’ referring to the shape of its tracks. Picture a small, nimble dinosaur leaving behind clues in the ancient mud for us to find.
• Avisaurus: Avisaurus was not a dinosaur but an ancient bird that lived during the time of dinosaurs. Its name means ‘bird lizard’. Imagine a small, flying creature soaring above the dinosaurs, a sign of the birds that would one day fill our skies.
• Azendohsaurus: Azendohsaurus was originally thought to be a dinosaur but was later found to be a reptile from before the time of dinosaurs. Its name means ‘Azendoh’s lizard,’ named after the place where it was found. Picture an ancient reptile, a predecessor to the age of dinosaurs.

Do you love dinosaurs? Which dinosaur that starts with A is your favorite? Share it with us in the comments!