250 Million Years Ago (c.1940)
While very dated stylistically, this documentary about fossils contains clear information.
Length: 8 minutes
Original aspect ratio: 4 x 3 (TV)
See also:
Titles with similar tags:
Lobster Tales, Siege of the South, Echidna the Survivor, The Barefoot Bushman: Dancing With Dingoes, Numbats