Triassic Takeover, Bob Bakker’s diagram showing the evolution & extinction, the waxing & waning, of archosaurs and synapsids during the Triassic and early Jurassic. (I believe this was originally published in The Dinosaur Heresies.)

Triassic Takeover, Bob Bakker’s diagram showing the evolution & extinction, the waxing & waning, of archosaurs and synapsids during the Triassic and early Jurassic. (I believe this was originally published in The Dinosaur Heresies.)