This genus of plesiosaur lived in North America, approximately 95 million years ago - this places it during the Cenomanian stage.
Its closest relative is Elasmosaurus, and both belong to the family Elasmosauridae.
There are six specimens of varying states of preservation on display at various museums in the United States.
This genus of plesiosaur lived in North America, approximately 95 million years ago - this places it during the Cenomanian stage. Its closest relative is Elasmosaurus, and both belong to the family Elasmosauridae. There are six specimens of varying states of preservation on display at various museums in the United States.
Thalassomedon