Exam 7: Evolution and the Fossil Record

A mass extinction of nearly all ammonite species occurred near the beginning of __________.

In general, __________ is the result of particularly extreme impacts of the limiting factors that normally hold populations in check.

The ancestors of the modern-day manatee were a species of

Evolutionary convergence within two or more different biological groups, for example, the evolution of __________, is convincing evidence of adaptation in biological forms.

Darwin noted the geographic distribution of species, for example, the rheas (flightless birds) are found only in __________, whereas their relatives, the emus and ostriches, are found elsewhere.

The common origin of toes of land-dwelling mammals, fingers of humans, and wings of bats is an example of

The oldest known horse, which is called __________, had four toes on each fore foot, three toes on each hind foot, and simple molar teeth.

Dollo's law says that

According to Darwin, the kinds of individuals that came to predominate as generation followed generation could be said to be

When a new species originates from a preexisting species, we call this