The Triassic was full of creatures that look a lot like other, more modern species, even though they're not closely related at all. The reason for this has to do with how evolution works and with the timing of the Triassic itself: when life was trapped between two mass extinctions.

Originally released by Knowledgemotion, 2018. Streaming video file encoded with permission for digital streaming by Infobase on February 21, 2020.

Why Triassic Animals Were Just the Weirdest (10:09); .