Qaisracetus
In Depth Qaisracetus was one of the earliest whales. Analysis of the skull suggests that it was a carnivore similar in lifestyle to other predatory prehistoric whales. Further Reading
Species Classification: Chordta
Zizhongosaurus
In Depth The problem with Zizhongosaurus is that not a lot of fossil material exists for this dinosaur, and what is known is incomplete, all factors which have led to this genus being treated as a nomen dubium by many. In addition a second set of remains used to establish a second species, Z. huangshibanensis, … Read more