ichthyosaur, extinct marine reptile from early triassic to late cretaceous, on white background, 3d paleoart rendering

animal aquatic background carnivore carnivorous creature cretaceous dangerous dinosaur early epoch era eurhinosaurus evolution extinct fish giant huge ichthyosaur ichthyosaurus isolated jurassic late life lizard marine monster nature ocean paleoart paleontologist paleontology predator prehistoric primeval quadriscissus rendering reptile sea shastasaurus shonisaurus stenopterygius triassic underwater vertebrate water white