A lone megapterygius (newly discovered mosasaur) basks in the limelight while exploring an underwater cavern. A quick concept that I decided to blotch out for fun, I may attempt it again in the future
*hands you a mosasaur* *hands you a mosasaur* *hands you a mosasaur* *hands you a mosasaur* *hands you a mosasaur* *hands you a mosasaur* *hands you a mosasaur* *hands you a mosasaur* *hands you a mosa-*
These marine lizards are up on my Redbubble! Check notes for the l-nk!
Research alert! Imagine putting flippers on a 24-foot Komodo dragon. That’s how Amelia Zietlow, a Ph.D. student at the Museum’s Richard Gilder Graduate School, describes Jormungandr walhallaensis, a newly identified species of mosasaur that was named in part after a sea serpent in Norse mythology.
Living some 80 million years ago during the Cretaceous, this mosasaur is thought to represent a transitional period between other well-known species. In addition to flippers and a stumpy, shark-like tail, Jormungandr had a bony ridge on its skull that would have given it the appearance of having “angry eyebrows.”
This is Parapuzosia seppenradensis, the largest known species of ammonite in the world.
They are 1.8 m or 5.9 ft across and that that one wasn't even complete! The living chamber was missing a chunk so it's even bigger!
It lived during the Campanian Epoch of the Late Cretaceous Period in what is now Europe and North America where the Western Interior Seaway was located.
They were pelagic predators, probably feeding on fish,
squid,
other ammonites,
and even marine reptiles if they could catch them
all while evading adult mosasaurs who definitely had them on the menu.
They were one of the first mesozoic animals to be given a name, beating the first named dinosaur Megalosaurus by 60 years! (1764 for the first named Mosasaurus, 1824 for Megalosaurus, the first named Dinosaur)