Hallucigenia - The Cambrian Enigma
54:23
Were These The First Animals?
13:50
Argentavis - The Heaviest Flying Birds
25:20
Placodonts - Triassic Tooth-Crushers
10:06
How Plankton Created A Bizarre Giant of the Seas
13:11
The Cambrian Period: Life's Prototype Stage | Random Thursday
13:45
What were Tyrannosaur Forelimbs Used For?
15:20
When Evolution Gets Weird
1:33:38