Prehistoric

🐬Ichthyosaurs

Ichthyosauria

~100 known species

Dolphin-shaped marine reptiles that were among the fastest swimmers in Mesozoic seas. Gave live birth at sea.

💡Ophthalmosaurus had the largest eyes relative to body size of any vertebrate — adapted for deep diving.

3 creatures

Can you guess creatures from their family tree?

GuessKin Prehistoric is a daily taxonomy puzzle — Wordle meets the tree of life.