Search Results for: Live sea urchins
extinction , at the end of the cretaceous period. plesiosaurs were mesozoic reptiles that lived at the same time as dinosaurs, and though they are often lumped together with the "terrible lizards," they were not dinosaurs . although plesiosaurs are not considered to have direct, living descendants, they live
group, the plesiosaurs were the largest aquatic animals of their time, and even the smallest were about two meters ( feet) long. they grew to be considerably larger than the largest giant crocodiles , and were bigger than their successors, the mosasaurs. however, their predecessors as rulers of the sea...
https://www.newworldencyclopedia.org/entry/Plesiosaur