Complete List of Dinosaurs That Start With O Plus Fun Facts

Are you ready for another adventure into the amazing world of dinosaurs? This time, we’re going to explore some outstanding dinosaurs that start with O. These “O” dinosaurs are just as fascinating as the ones we’ve met before, each with their own special stories from millions of years ago. So, let’s get our explorer hats on and learn about these awesome dinosaurs that start with O!

First, let’s meet the Oviraptor. Its name might sound a bit scary because it means “egg thief,” but don’t worry, the Oviraptor is super interesting! This dinosaur was not very big and had feathers like a bird. It walked on two legs and had a beak that didn’t have any teeth. Some scientists think it might have used its beak to crack open nuts and seeds.

Next up is the Ouranosaurus. This dinosaur is special because it had a large sail on its back, made of skin stretched over long spines. The Ouranosaurus was a plant-eater, and it’s possible that its sail helped it stay cool in the hot sun or even show off to other Ouranosauruses.

And we can’t forget about the Ornithomimus. This dinosaur’s name means “bird mimic” because it looked a bit like a modern-day ostrich. It had long, skinny legs, and it was probably a really fast runner. The Ornithomimus didn’t have teeth, but it had a beak and might have eaten plants, insects, and small animals.

Are you excited to discover more about these dinosaurs that start with O? From the Oviraptor with its bird-like features to the fast-running Ornithomimus, dinosaurs that start with O are full of surprises. Let’s continue our prehistoric exploration and uncover all the cool things about these fascinating creatures!

Discover about Dinosaurs that start with O!

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

Ready to discover more dinosaurs? Check out our list of dinosaurs that start with M and our list of dinosaurs that start with N.

Common Dinosaur that start with O

Complete list of Dinosaurs that start with O

Facts about Dinosaurs that Start with O

• Oceanotitan: An Oceanotitan was a large, long-necked dinosaur from Portugal. It was a sauropod, known for its size and strength.
• Oculudentavis Khaungraae: An Oculudentavis Khaungraae was a tiny, bird-like creature from Myanmar. It’s one of the smallest dinosaurs ever discovered. Imagine a tiny, agile creature, flitting around like a hummingbird.
• Ohmdenosaurus: An Ohmdenosaurus was a long-necked, plant-eating dinosaur from Germany. It was a sauropod, so it was quite large and loved eating leaves.
• Ojoceratops: An Ojoceratops was a horned dinosaur from North America, related to Triceratops. It had a large frill and horns.
• Ojoraptorsaurus: An Ojoraptorsaurus was a small, bird-like dinosaur from North America. It was fast and might have been a good hunter.
• Oligosaurus: An Oligosaurus is a lesser-known dinosaur, and we’re still uncovering its secrets.
• Olorotitan: An Olorotitan was a duck-billed dinosaur from Russia with a beautiful crest on its head. It was a plant-eater and quite large. Imagine a majestic dinosaur, peacefully eating plants and communicating with its crest.
• Omeisaurus: An Omeisaurus was a long-necked, plant-eating dinosaur from China. It was a sauropod, so it was huge and loved plants.
• Omnivoropteryx: An Omnivoropteryx was a bird-like dinosaur that might have been an omnivore. It lived in what is now China. Imagine a small, agile creature, exploring the ancient world and eating both plants and small animals.
• Omosaurus: An Omosaurus, now known as Dacentrurus, was an armored dinosaur from Europe. It had bony plates and spikes for protection.
• Onychosaurus: An Onychosaurus is a dinosaur known from limited remains. We’re excited to learn more about it.
• Oohkotokia: An Oohkotokia was an armored dinosaur from North America. It had strong, protective plates and might have been quite tough. Think of a small, walking tank, moving through ancient forests, feeling secure in its armor.
• Opisthocoelicaudia: An Opisthocoelicaudia was a long-necked, plant-eating dinosaur from Mongolia. It was a sauropod, so it was massive! Picture a gentle giant, living peacefully and enjoying its leafy meals.
• Oplosaurus: An Oplosaurus is a dinosaur known mostly from its fossilized teeth. We’re still piecing together its history.
• Orcomimus: An Orcomimus was a small, bird-like dinosaur from North America. It was fast and might have been a good hunter.
• Orinosaurus: An Orinosaurus is a lesser-known dinosaur, and we’re still learning about it.
• Orkoraptor: An Orkoraptor was a meat-eating dinosaur from Argentina. It was a predator with sharp teeth and claws.
• Ornatotholus: An Ornatotholus was a small, armored dinosaur from North America. It had a domed head and might have used it for defense. Picture a little dinosaur, roaming around with its unique head shape.
• Ornithodesmus: An Ornithodesmus was a small, bird-like dinosaur from England. It had long legs and might have been fast. Imagine a tiny, feathery dinosaur, running around.
• Ornitholestes: An Ornitholestes was a small, meat-eating dinosaur from North America. It was fast and had sharp teeth. Picture a little, quick dinosaur, hunting for small animals and insects.
• Ornithomerus: An Ornithomerus is a dinosaur known from only a few fossils. We’re excited to learn more about it.
• Ornithomimoides: An Ornithomimoides was a bird-like dinosaur from Mongolia. It was probably fast and agile. Think of a tiny, feathery dinosaur, darting around quickly.
• Ornithomimus: An Ornithomimus was a bird-like dinosaur from North America. It was fast, had long legs, and was probably an omnivore.
• Ornithopsis: An Ornithopsis was a long-necked, plant-eating dinosaur from England. It was a sauropod, so it was quite big and loved plants.
• Ornithosuchus: An Ornithosuchus was not a dinosaur but a prehistoric reptile that lived alongside dinosaurs. It was like a crocodile.
• Ornithotarsus: An Ornithotarsus is a dinosaur known from limited remains. We’re still piecing together its story.
• Orodromeus: An Orodromeus was a small, plant-eating dinosaur from North America. It was fast and had long legs.
• Orosaurus: An Orosaurus is a lesser-known dinosaur, and we’re eager to learn more about it. It’s part of the exciting world of dinosaurs.
• Orthogoniosaurus: An Orthogoniosaurus is a dinosaur known from only a few fossils. We’re excited to learn more about it.
• Orthomerus: An Orthomerus was a dinosaur from Europe, known from limited remains. Every new discovery about it is exciting.
• Oryctodromeus: An Oryctodromeus was a small, burrowing dinosaur from North America. It was unique because it dug burrows. Picture a little dinosaur, creating safe homes underground.
• Oshanosaurus: An Oshanosaurus was a long-necked, plant-eating dinosaur from China. It was a sauropod, so it was huge and loved eating plants.
• Osmakasaurus: An Osmakasaurus was a plant-eating dinosaur from North America. It was related to Iguanodon and was probably quite agile.
• Ostafrikasaurus: An Ostafrikasaurus was a meat-eating dinosaur from Tanzania. It might have been similar to early crocodiles. Imagine a strong, ancient predator, living in a world filled with diverse creatures.”
• Ostromia: An Ostromia was a small, bird-like dinosaur from Germany. It was closely related to Archaeopteryx and had feathers. Picture a tiny, feathery dinosaur, flapping its wings in the ancient skies.
• Othnielia: An Othnielia was a small, agile dinosaur from North America. It was a plant-eater and probably quite fast.
• Othnielosaurus: An Othnielosaurus, previously known as Othnielia, was a small, plant-eating dinosaur. It was fast and nimble.
• Otogosaurus: An Otogosaurus is a dinosaur known from limited remains. We’re still piecing together its history.
• Ouranosaurus: An Ouranosaurus was a unique, plant-eating dinosaur from Africa. It had a sail on its back and a duck-billed snout. Picture a distinctive dinosaur, basking in the sun and eating plants.
• Overosaurus: An Overosaurus was a plant-eating dinosaur discovered in Argentina. It’s classified as a sauropod, known for their long necks and tails, and large body size.
• Oviraptor: An Oviraptor was a small, bird-like dinosaur from Mongolia. Its name means ‘egg thief,’ but it’s now believed it might have been protecting its own eggs, not stealing them. Picture a feathery dinosaur, carefully looking after its nest and showing a caring side of the dinosaur world.
• Owenodon: An Owenodon was a plant-eating dinosaur from England. It was related to Iguanodon and had a beak for eating plants. Imagine a large, peaceful dinosaur, wandering around and munching on leaves, living in the lush, green world of ancient Europe.
• Oxalaia: An Oxalaia was a large, meat-eating dinosaur from Brazil, closely related to Spinosaurus. It likely had a long, crocodile-like snout and ate fish. Imagine a powerful predator, roaming the waterways of ancient Brazil, catching fish with its sharp teeth.
• Ozraptor: An Ozraptor was a small, meat-eating dinosaur from Australia. Despite its name, it was more closely related to crocodiles than to raptors.

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