Exam 18: Life History

What was the importance of the therapsids?

The duck-billed dinosaurs belonged to the ____________________ dinosaur group.

The dominant type of flora in non-swampy areas of the Late Paleozoic consisted of __________________.

The oldest hominids belong to the genus ____________________.

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

What were pterosaurs? What adaptations did they have for their unique ability?

Devonian mass extinctions were caused by global cooling that made the environment unfavorable for the widespread reef organisms of the time period.

What was the large size of many Pleistocene mammal species attributed to?

The greatest percentage of all mammals are not marsupials.

A. africanus appeared about 3.0 million years ago and is very similar to A. afarensis except for a few minor details.

Mammals attained a high degree of diversity and abundance during the Mesozoic.

What is the best alternative to the meteorite impact hypothesis for the Cretaceous mass extinction?

The ____________________ were characterized by a thickened dome-shaped skull.

The oldest hominids belong to the genus Homo.

____________________ was a robust creature with a developed social structure.

Mass extinctions at the end of the Ordovician occurred because of:

The development of the seed played what role in vascular plant evolution?

What is a symbiotic relationship?

What is significant about Neanderthals?

What were ichthyosaurs? What adaptations did they have for their locomotion ability?