Paleozoic Life, Mesozoic Events, Mesozoic Life(invertebrates Only)

42 Questions  I  By Blairnoelledavidson
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1.  How did the reef ecosystem change during the Cretaceous Period?
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2.  This rock unit fills many of the Triassic rifts on eastern coast of North Amercia.
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3.  What might have caused the "Cambrian Explosion" of diversity?
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4.  The unique calcareous and phosphatic fossil group spanning the Neoproterozoic-Cambrian boundary is called _______.
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5.  What was the tectonic and geographic configuration of western North America during Late Cretaceous time?
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6.  This usually helps bring on global warming:
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7.  Warmest geological time interval listed below.
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8.  Mexico separated from South America during _______. 
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9.  Carbonate microfossil very common in Cretaceous chalks
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10.  In the western U.S., Upper Jurassic swampy plain deposits rich in donosaur fossils are collectively called ________.
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11.  Most important macrofossil group for correlation of Mesozoic strata
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12.  What groups of animals were conspicuous in Triassic and Jurassic seas, and what groups that had been prominent in late Paleozoic time were absent?
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13.  This type of organism comprised the principle reef-builder during the Cambrian.
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14.  Bioturbation is caused by _________.
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15.  What is the Burgess Shale fauna's significance?
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16.  This fossil shell has symmetrical valves.
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17.  The age of the Burgess shale fauna is mainly __________.
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18.  Arizona's Painted Desert, exposed in the Petrified Forest National Park, is developed mainly in this formation.
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19.  Geological age of Franciscan Complex melange of California is _________.
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20.  What is the sedimentary evidence for rifting of Pangea early in the Mesozoic Era?
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21.  Increased CO2 in the atmosphere results in _______.
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22.  Millions of years required for Pangea to rift apart into all Mesozoic continents.
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23.  The term for crumpled, altered rock sequences that are trapped between converging plates is ________. 
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24.  South America split from Africa during _______.
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25.  During Cretaceous, the general direction of motion of the subducting Pacific Plate under western North America was ______.
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26.  One of the most abundant three-lobed, swimming or crawling arthropods of the Cambrian were ________.
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27.  Reef building organisms during the Mesozoic are called
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28.  Characteristic tectonic features of eastern rifted margin of North America were ______.
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29.  What evidence is there for the existence of a foreland basin during Jurassic time in western North America?
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30.  During Late Cretaceous, there was a continental seaway that connected the Arctic Ocean with the _______.
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31.  Why did large bodies of nonmarine sediment accumulate in eastern North America during early Mesozoic time?
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32.  Found in the Burgess Shale fauna, this is one of the oldest chordates. 
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33.  How did Ordovician life differ from Cambrian life?
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34.  Cretaceous spans this entire interval (in millions of years). 
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35.  When did crinoids reach their greatest diversity?
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36.  Continents of Pangea were still clustered closely together or joined during _______.
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37.  This type of coral replaced the principle Silurian reef-forming coral as the main reef-forming coral during Devonian and Carboniferous.
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38.  Why did stromatolites decline during Cambrian and Ordovician time?
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39.  Characterizes end of Cretaceous.
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40.  During Permian-Trassic, a volcanic arc collided with the west coast thus causing this orogeny.
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41.  The largest predator of the Burgess Shale was ________.
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42.  Why did the innovation of the seed liberate land plants from their dependence on moist conditions and allow them to invade drier habitats in the Devonian?
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