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With one of the longest necks of any dinosaur, Mamenchisaurus is the perfect animal to ask to reach something on the top shelf…

While most reptiles don’t have lumbar vertebrae like us mammals, crocodilians convergently evolved something similar…

While it was referred to as Barosaurus unofficially, the specimen known as BYU 9024 has been officially referred to Supersaurus. This giant is estimated at a colossal 39 meters in length! Skeletal courtesy of Fossil Crates 🦖🦕 and art by Fabio Alejandro

This image of the Field Museum team handling the life sized head of Quetzalcoatlus really puts in perspective how enormous this thing was…

The devourer of his own children…

*mouthful of snake* “wut?”

My friend Luigi and his family are currently dealing with typhoon related flood damage. He does commissions so if you can, put him to work. It’s a win win. I’m devoting this tweet to him, highlighting the fossil dwarf buffalo Bubalus cebuensis from the Philippines…

You get to choose 3 prehistoric animals to be featured in Jurassic World Rebirth. Which 3 are you choosing? I’m gonna go with Dryptosaurus(Gabriel N. U.), Kronosaurus(Mau), and Tropeognathus(Teratophoneus on DA)…

No cheating, what’s the last song y’all listened to?

*heavy breathing*

While the holotype of Sillosuchus is about 3 meters in length, other fossils attributed to the animal suggest sizes three times that. If that holds true, this is one of the biggest known terrestrial pseudosuchians and one of the larger nondinosaur land reptiles of the Triassic

At 5-6 meters long, Sinoceratops is the largest known ceratopsian from Asia. It’s also the only known ceratopsid from the continent, a group otherwise exclusively known from North America…

There are two major branches of the archosaur family tree, the croc line and the bird line. Only the derived crocodilians and avians remain from both of these historically diverse groups, though they generally do well today…

"Antarctosaurus" giganteus is among the largest known dinosaurs, with length estimates of at least 23 meters(though several have been higher) and 40+ tons. However, due to its fragmentary nature, it’s unknown what genus this animal even was as the known fossils aren’t diagnostic.

This young Allosaurus encountering a crocodile by James Gurney may not be accurate(true crocodiles like this hadn’t evolved yet), but it’s certainly a stunning piece…

General reminder that Monsters Resurrected made their Rugops 30 feet(9 meters) in length. I’ve seen online guesstimates for the Spinosaurus based on that exceed something like 135 feet(41 meters). That is, needless to say, too big…

The giant head of Paraphysornis, a 6 foot tall terror bird. The hooked beak would’ve been perfect for tearing into flesh. #FossilFriday

The up to 3 meter Mesozoic fish Protosphyraena may look superficially like a swordfish but is from an unrelated extinct group…