Also found in: Wikipedia.


n.1.(Paleon.) An extinct, long-necked, marine, cretaceous reptile from Kansas, allied to Plesiosaurus.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Of course the models won't be quite to that scale, though we are promised a Elasmosaurus which tips 50 feet in length -- interesting because palaeontologists suggest the animal only reached 34 feet!
10The Elasmosaurus are known for their extremely long necks, which contained up to 75 vertebrae.
He ventured that the creature could only have been an Elasmosaurus, a subspecies of long-necked dinosaurs that roamed the earth 80 million years ago.
Researchers from the Dead Sea and Arava Science Center found tooth and jaw fragments, broken limbs, fins and vertebrae of the Elasmosaurus (Elasmosaurid) reptile that lived 85 million years ago.
They're unlike anything you own: on one men's polo an ostrich, a frog and an Elasmosaurus battle the currents of some kind of watery vortex.
The featured creatures include the Liopleurodon, gigantic Shonisaurus and long-necked Elasmosaurus. A complementary new Dino Jaws exhibition is now running next door at Thinktank.