During the scene with Amelia in the biology lab, Wei-Chen has an affinity to the teacher's lipstick-wearing monkey, who will not leave him alone. Wei-Chen can easily recognize that the monkey is actually a male, just as the monkey can actually recognize that Wei-Chen is a monkey himself.
Did the first vertebrates evolve during the mesozoic era? No. The 1st vertebrates appeared in the fossil record about 525 million years ago during the Cambrian Period.
It left trackways, which shows that it had many legs. Among the oldest known land fossils are millipeds. http://www.fossilmall.com/Cambrian_Shado... http://www.crystalinks.com/oldestanimal.... The first vertebrates on land were Ichthyostega and Acanthostega, early tetrapods that were ancestral to the amphibians.ttp://www.fossilmall.com/Cambrian_Shado... http://www.crystalinks.com/oldestanimal.... The first vertebrates on land were Ichthyostega and Acanthostega, early tetrapods that were ancestral to the amphibians.