Primitive reptiles first appeared during the _____ period.
A) Silurian
B) Carboniferous
C) Ordovician
D) Devonian
E) Cambrian
Correct Answer:
Verified
Q22: For a span of some 300 million
Q23: The first amphibians appeared during the _
Q24: The three periods of the Mesozoic era
Q25: The first flowering plants,first true mammals,and first
Q26: Place the labeled traits in this list
Q28: A mass extinction,perhaps caused by a large
Q29: The mass extinctions of the Permian period
A)
Q30: The Cenozoic era consists of the _
Q31: The Mesozoic era lasted from about
A) 500
Q32: The amniote egg in which an embryo
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