Pikaia was a swimming chordate whose fossils are found in the
A) Tommotian fauna.
B) Burgess Shale.
C) Rocky Mountains of Colorado.
D) new fossil sites of China.
Correct Answer:
Verified
Q11: The main Ordovician floating animals were the
A)
Q12: The earliest known vertebrate animals were the
A)
Q13: The largest Ordovician predator was a
A) variety
Q14: The oldest organic reefs with skeletal structures
Q15: Each of the first three Cambrian mass
Q17: What was the position and orientation of
Q18: The conodontomorphs first appeared during
A) Early Ordovician.
B)
Q19: The trilobites first appear during
A) Early Ordovician.
B)
Q20: The organism that left tracks on sediment
Q21: The shift toward heavier oxygen and carbon
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