In one shot of the Arandaspis fish swimming near a reef, a scene supposedly set 475 million years ago when fish were just beginning to evolve, a present-day fish can be seen among the coral in the background.
Predation from Erythrosuchus is said to have lead to the extinction of Lystrosaurus, though these two animals did not coexist. Descendants of Lystrosaurus called Kannemeyeriiformes still lived tens of millions of years later, which were actually contemporaries to Erythrosuchus.
At one point, amphibians, reptiles, birds, mammals and dinosaurs are listed as separate animal groups belonging to the amniotes. Dinosaurs are reptiles themselves and the group of birds is nestled within dinosaurs.