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what I F Suppose researchers discover a fossil of an organism that lived 300 million
Chapter 25, Problem 3(choose chapter or problem)
QUESTION:
what I F ? Suppose researchers discover a fossil of an organism that lived 300 million years ago but had mammalian teeth and a mammalian jaw hinge. What inferences might you draw from this fossil about the origin of mammals and the evolution of novel skeletal structures? Explain.
Questions & Answers
QUESTION:
what I F ? Suppose researchers discover a fossil of an organism that lived 300 million years ago but had mammalian teeth and a mammalian jaw hinge. What inferences might you draw from this fossil about the origin of mammals and the evolution of novel skeletal structures? Explain.
ANSWER:Based on this fossil, you could infer that mammals had already evolved novel skeletal structures at least 300 million years ago. This is somewhat surprising since mammal evolution is often thought to have been relatively recent. It