Exam 18: Life History

How do you think the evolution of jawed fishes and other predatory creatures affected the marine ecosystem?

What evidence of life was there on Earth prior to stromatolites?

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

Many of the large dinosaurs, such as Tyrannosaurus , are known as the ____________________ dinosaurs.

In the Early Cambrian, there was a great diversity of fauna that represented many phyla that exist today.

What are prokaryotic organisms?

Mammals that give birth to live young that need little or no protection after birth are called ____________________ mammals.

Mammals that produce an unprotected embryo that undergoes further development in a pouch are called ____________________ mammals.

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

What were the factors that made it difficult for animals to adapt to land?

What are stromatolites and why are they important in Earth history?

What is the prehistoric overkill hypothesis, and what evidence supports overkill as the reason for the Pleistocene extinctions? What is the alternative hypothesis?

The first jawed fish were the:

The sail-like fin on the pelycosaur may have served as all but which of the following?

Briefly state some of the problems that plants had to overcome as they adapted to land and how they accomplished that.

The ____________________ dinosaurs are also known as the bird-hipped dinosaurs.

What is an invertebrate?

The adaptive radiation of mammals began following the Mesozoic extinctions.

Gymnosperms are:

The fin-back reptiles are called ____________________, and they became extinct during the ____________________.