Old Earth Ministries
Earth History Test 3


Please choose the correct answer for each question below. There are 15 questions. You cannot save your progress and come back later to complete the test, therefore you must complete the test during one session. Please enter your name, a single character in the email field, and the number 1 in the Student ID field.
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1: The Cambrian Period started how many years ago?

2: The Cambrian Period ended how many years ago? (Hint - there is a decimal point in this answer!)

3: The supercontinent Gondwana included what modern day landmasses?
North America, South America, Africa, and Australia
Europe, Asia, Greenland, and Iceland
Antarctica, South America, Africa, Australia, and the islands of Madagascar, New Zealand, and New Guinea
Asia, Europe, Australia, and Alaska
4: 4. A Lagerstätte is a sedimentary deposit that exhibits extraordinary fossil richness or completeness.
True
False
5: Precambrian marine diversity was dominated by small fossils known as...

6: Although it is referred to as the 'Cambrian Explosion,' the apperance of animals was gradual, over millions of years.
True
False
7: Most of the earth's landmass during the Cambrian was concentrated in the northern hemisphere.
True
False
8: Most preserved trilobites in the fossil record consist of the exoskeleton.
True
False
9: The trilobite body is divided into three major sections (questions 9-11). The section with the head is the ...

10: The middle section is the...

11: The tail section is the...

12: 12. The Burgess Shale, located in British Columbia, is a famous fossil bearing formation which preserves the soft parts of its fossils. About how old is the Burgess Shale?
420 Ma
505 Ma
542 Ma
718 Ma
13: The geologic period that preceeded the Cambrian is the ___________________ Period.

14: The geologic period that follows the Cambrian is the ____________________ Period.

15: 15. The possible causes of the Cambrian Explosion are numerous, but usually fall into three broad categories, which are environmental, developmental, and social changes.
True
False

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