Whenever the footage recorded by the minisub is shown, the time codes in the screen's corner sometimes jump around randomly.
The last segment takes place 75 million years ago. In one shot, a Tyrannosaurus rex makes a cameo, yet the species only evolved millions of years later. It could be argued that this is another kind of dinosaur related to T. rex, but it look no different than the series' former depiction of the animal.