Science Marches On/Paleoworld

Paleoworld (1994-1997) is one of the most complete documentaries on prehistoric life that ever aired. However, given its air date, it has become majorly dated.

Episode 2: Flight of the Pterosaurs

 * Throughout the episode, paleontologists argue whether pterosaurs walked on two or four legs. Current consensus favors the latter theory.

Episode 3: Back to the Seas

 * Whales are no longer believed to have descended from mesonychids, but rather from artiodactyl (even-toed) ungulates, such as pigs, cattle, deer, antelope, camels and hippopotami.
 * Pakicetus was more doglike than the episode portrayed it.

Episode 4: Carnosaurs

 * Most of these guys aren't even carnosaurs in the 21st century. These days, the term refers only to Allosaurus and its closest kin.

Episode 6: Sea Monsters

 * Kronosaurus did not grow 50 feet long. The first specimens found were in poor condition, and so the people who put the fossil together gave it too many vertebrae. It probably didn't reach much longer than 30 feet.
 * Plesiosaurs probably couldn't return to land.

Episode 16: Earthshakers

 * Seismosaurus was not its own species, but rather a large Diplodocus.

Episode 20: Dinos in the Air

 * Protoavis is probably just a jumble of bones from different creatures, not an early bird.

Episode 26: Troodon: Dinosaur Genius

 * Troodon should have feathers.

Episode 41: Loch Ness Secrets

 * Mosasaurs could not move on land, nor were they ancestral to monitor lizards.

Episode 46: Killer Raptors

 * Deinonychus should be feathered.
 * Megaraptor was not a dromaeosaur, but rather a carnosaur with an abnormally large hand claw.

Episode 47: Clash of the Titans

 * Giganotosaurus was not the largest carnivorous dinosaur. Spinosaurus was.

Episode 49: Valley of the Uglies

 * Diatryma should be called Gastornis.
 * Dinohyus should be called Daeodon.
 * Archaeotherium and Megachoerus are one and the same.

Episode 50: Troodon: Portrait of a Killer

 * Troodon should be feathered.