Question

What fossil evidence BEST supports the classification of animals into these two basic branches, still recognized today?

A) fossilized amniotic eggs
B) impressions of scales versus fur
C) evidence of exoskeletons and endoskeletons
D) fossilized bones with and without air cavities

Answer 1

C)evidence of exoskeletons and endoskeletons

Answer 2

The answer is C, animals have an endoskeleton and exoskeleton. Endoskeleton is found on the inside of the animal, this is used to support weights and sizes while exoskeleton is on the outside, they are the outer shell or coating that protects them from predators.