Earth History Test 6 - The Devonian Period
Earth History Test 6


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, and take the quiz.
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1: The Devonian Period started ______________ Ma. (Hint:: omit the decimal point)

2: The Devonian Period lasted _______________ Ma.

3: The Devonian is named after Devon, a county in southwestern England, where Devonian rocks are common.
True
False
4: The first true trees are found in the Devonian, and are from the Genus _____________.
Prototaxites
Lycophytes
Wattieza
5: With the first trees, plants with roots developed, aiding the the creation of the first soils.
True
False
6: Prototaxites may have resembled a tree, but it is thought to be either a fungus or a lichen.
True
False
7: Lycopodiophyta (or Lycopods) is the oldest living vascular plant division, having been found in the fossil record up to 427 Ma, and becoming abundant in the Devonian.
True
False
8: Although fish are found in the Cambrian, due to the appearance of many fish in the Devonian, the Devonian is known as the "Age of the Fishes."
True
False
9: The _________________ is the common name for an order of fish found in the Devonian, and it still has some species alive today.

10: Ammonites are an extinct group of marine animals, most closely related to the modern Nautilus.
True
False
11: The Late Devonian Extinction caused 19% of all families and 50% of all genera to go extinct. It was the result of a single extinction event that lasted no more than 10 years.
True
False
12: The possible triggers of the extinction is:
Bolide impacts
Plant evolution
Weathering
Carbon dioxide changes
All of the Above
13: The chambered part of the ammonite shell is called a phragmocone. The animal occupied the entire coiled shell.
True
False
14: The ________________ were a group of jawed fishes, appearing at the beginning of the Devonian, and becoming extinct at the end of the Devonian.
Ostracoderms
Acanthodians
Chondrichthyes
Placoderms
15: Sharks, rays, and chimaeras appeared in the middle Devonian, and belong to the class Chondrichthyes.
True
False

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