Image by Dmitry Bogdanov · CC BY 3.0 · View on Wikimedia Commons

Temnodontosaurus

Dolphin-shaped sea reptiles: fast swimmers with huge eyes that gave birth to live young at sea instead of laying eggs on land.

Who it is related to: A branch of reptiles separate from the dinosaurs; exactly where it sits on the family tree is still debated.

This page has only the scientific data from the databases; there is no hand-written description yet.