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.
Archaebacteria were the first animals to live on earth before any other organism. Archaebacteria have to be able live where there's no oxygen because there was no oxygen when they first appeared.juryrocket Â· 5 years ago.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.