The episode depicts the 'Aucasaurus' as having sharp claws on its forelimbs. In real life, the arms of these animals were so puny and underdeveloped, that they actually lacked claws. What more, some scientists argue that they didn't even have fingers. However this cannot be considered a legit goof, since the discovery was made after the show had been finished.
The trivia item below may give away important plot points.
At the end of the episode, Dragonfly has a fight with Alpha, during which the latter stumbles and falls on Dragonfly, crushing his skull. This is a reference to the 'Aucasaurus' type specimen, which has been discovered with severe injuries on its skull.