Thalassomedon stock image
Thalassomedon is a 12 m (39 ft) long elasmosaurid plesiosaur from the Cenomanian of the Cretaceous.
Illustration by Mohamad Haghani
Thalassomedon is a 12 m (39 ft) long elasmosaurid plesiosaur from the Cenomanian of the Cretaceous.
Illustration by Mohamad Haghani