Exam 18: Life History

What were the pelycosaurs,and why were they important?

Where are the Ediacaran fauna found?

How did transgressing and regressing seas affect the quantity and diversity of life forms in the Paleozoic?

What characterized the Ordovician in terms of invertebrate life,and how does that relate to what was happening geologically?

What was the first line of evidence that the Cretaceous Mass Extinctions were caused predominantly by a large meteorite impact?

What happened to marine invertebrates during the mass extinction that occurred at the end of the Permian Period,and what caused it?

The Ediacaran fauna represent the first fauna with internal skeletons.

What is the Cambrian explosion? Is their appearance sudden? Why is it sudden,or why does it seem so?

How were hominids different from other primates?

What evidence of life on Earth before stromatolites do we have?