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.
The era began with the breakup of one supercontinent and the formation of another. Plants became widespread. And the first vertebrate animals colonized land. Life in the Paleozoic. The Paleozoic began with the Cambrian Period, 53 million years best known for ushering in an explosion of life on Earth.This Cambrian explosion included the evolution of arthropods (ancestors of today's insects and crustaceans) and chordates (animals with rudimentary spinal cords).nd the first vertebrate animals colonized land. Life in the Paleozoic. The Paleozoic began with the Cambrian Period, 53 million years best known for ushering in an explosion of life on Earth.