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Chapter 11 Geo

Terms in this set (22)

The earliest epoch of the Cenozoic is
Paleocene
One of the leading theories of the extinction of a giant shark Megalodon is that they were outcompeted by the great white shark
True
The iridium anomaly at the Cretaceous/Tertiary boundary supports the __________ theory of extinction event.
meteor/asteroid impact
During what period in the Cenozoic did Antartica became completely separated and surrounded by a Circum-Antarctic current?
Eocene
Most of the existing orders of mammals were present by the _________ time
Oligocene
The group of mammals that have an even number of toes are called _________________
Artiodactyls
Which of these marine invertebrates were not present in the oceans during the Paleogene?
...
Whales are belong to and had evolved from land mammals, known as ____________
Artiodactyls
The earliest ancestor of the carnivorous mammals was the _____________________
Miacid
The Laramide orogeny involved the subduction of the Farallon plate under the western margin of the North America and formation of the Rocky Mountains
True
The significant climate cooling from the Middle Eocene to Early Oligocene was primarily a result of
Establishment of a continuous circumpolar current around Antartica
The San Andreas Fault separates the North American from the Pacific plate
True
The evolutionary trend between artiodactyls and perissodactyls has shown an increase in the artiodactyls and decrease in perissodactyls throughout the Cenozoic
false
The significant climate cooling from the Middle Eocene to Early Oligocene was primarily a result of
Establishment of a continuous circumpolar current around Antarctica
One of the good indicators of changes in terrestrial temperatures comes from study the ______________ of plant fossils.
location
The Himalayan Mountains formed from ___________________
a continent-continent collision
All, but which of the following mountain ranges could be considered parts of the Alpine belt?
Pyrenees
Plants with large entire margin leaves are indicative of ______________ climate
cool, dry
Carnivorous mammals have specialized shearing teeth called __________
carnasials
The group of mammals that have an even number of toes are called ________________
Artiodactyls
Mammals are easier to identify than reptiles because
Mammal teeth are differentiated into a very distinct types
The Cenozoic marine deposits in North America are a part of the ____________ Cratonic Sequence
Zumi
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