Random Prehistoric Animal Generator

All 35 prehistoric animals in the generator

• Tyrannosaurus Rex – Its bite force is estimated at up to 35,000 newtons, the strongest of any known land animal
• Triceratops – Its skull could exceed 2 metres long, one of the largest skulls of any land animal
• Stegosaurus – More time separates Stegosaurus from T. rex than separates T. rex from humans
• Velociraptor – It was roughly turkey-sized and feathered, far smaller than its movie portrayal
• Brachiosaurus – Its front legs were longer than its hind legs, giving it a giraffe-like sloping back
• Spinosaurus – It is among the longest known predatory dinosaurs, estimated at around 14 metres long
• Ankylosaurus – Its tail club was built from fused bony plates and could swing hard enough to break bone
• Pteranodon – It was a pterosaur, not a dinosaur, and large males had wingspans of up to about 7 metres
• Quetzalcoatlus – One of the largest flying animals ever, it had a wingspan of roughly 10 to 11 metres
• Mosasaurus – It was a giant sea-going lizard, not a dinosaur, related to today's snakes and lizards
• Plesiosaurus – Fossil hunter Mary Anning found the first nearly complete Plesiosaurus skeleton in 1823
• Ichthyosaurus – Ichthyosaurs gave birth to live young at sea, and some fossils preserve mothers mid-birth
• Woolly Mammoth – A small population survived on Wrangel Island until about 4,000 years ago
• Smilodon – The upper canines of the largest species could reach about 28 cm long
• Megalodon – Its serrated teeth could grow over 17 cm long, bigger than a human hand
• Dodo – It was a giant flightless pigeon whose closest living relative is the Nicobar pigeon
• Thylacine – The last known thylacine died at Hobart Zoo in Tasmania in 1936
• Megatherium – This giant ground sloth was elephant-sized, weighing up to about 4 tonnes
• Glyptodon – This car-sized armadillo relative had a shell made of over 1,000 bony plates
• Dunkleosteus – Instead of teeth, it had self-sharpening bony blades built into its jaws
• Trilobite – Their eyes had lenses made of calcite crystal, among the oldest complex eyes known
• Anomalocaris – Its fossil parts were first mistaken for three animals: a shrimp, a jellyfish and a sea cucumber
• Meganeura – This dragonfly relative had a wingspan of about 70 cm, among the largest insects ever
• Titanoboa – The largest snake ever found, it grew to about 13 metres long just after the dinosaurs died out
• Dimetrodon – Not a dinosaur at all, it was a synapsid more closely related to mammals
• Archaeopteryx – It had feathered wings yet also teeth, a long bony tail and clawed fingers
• Paraceratherium – This hornless rhino relative is among the largest land mammals ever, nearly 5 m at the shoulder
• Allosaurus – One Allosaurus fossil has a vertebra punctured by a Stegosaurus tail spike
• Diplodocus – Its long whip-like tail contained around 80 vertebrae
• Parasaurolophus – Its hollow head crest may have worked like a trombone to produce low, booming calls
• Iguanodon – Its thumb spike was first reconstructed as a horn sitting on its nose
• Pachycephalosaurus – Its domed skull roof was up to about 25 cm thick
• Elasmosaurus – Its neck held 72 vertebrae and made up more than half of its roughly 10 m length
• Deinosuchus – This giant alligator relative grew to around 10 metres and likely preyed on dinosaurs
• Irish Elk – Its antlers spanned up to 3.6 metres, the largest of any known deer

Frequently asked questions

Is this a random dinosaur generator?

Yes, and more: besides dinosaurs it includes pterosaurs, marine reptiles, ice age megafauna and other extinct animals.

Were pterosaurs and mosasaurs dinosaurs?

No. Pterosaurs were flying reptiles and mosasaurs were marine reptiles. They lived alongside dinosaurs but belong to separate groups.

Are the facts accurate?

They follow current scientific consensus, but paleontology changes as new fossils are found.