The big eyed ichthyosaurs fossils are intriguing.
The drastically different features of the bones, yet with the similarity that tells us what we are. The sheer size of it is is remarkable. They have eyes, as big as a basket ball, that stare us from the fossils -- the ancient fossilized mineralized fossils.
Imagine a room full of portraits of kings and queens.
Those fish-like or dolphin-like marine reptilians with flukes and fins, preyed on cephalopods then got smaller in size in Jurassic, eating fish. Serrated teeth attached not in sockets, fins backed up with many fingers and phalanges, ...