Prehistoric sea animals, size comparison video

This 29 November 2019 video is called MARINE REPTILES and other animals of the time of dinosaurs. Size comparison.

Another, 18 August 2019, video used to say about itself:

Largest prehistoric sea animals of different kinds. Size comparison. Paleoart

TAXA: Aegirocasis, Jaekelopterus, Parapuzosia, Rhizodus, Cameroceras, Archelon, Titanichthys, Hydrodamalis, Mosasaurus, Pliosaurus, Mauisaurus, Livyatan, Leedsichtys, Basilosaurus, Megalodon, Shastasaurus, Blue Whale.