The amniote egg in which an embryo could develop completely on dry land arose during the _____ period.
A) Devonian
B) Permian
C) Ordovician
D) Cambrian
E) Silurian
Correct Answer:
Verified
Q27: Primitive reptiles first appeared during the _
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
Q33: Archosaurs and small therapsid reptiles survived the
Q34: The period in which modern continents were
Q35: Placental mammals appeared during the _ period.
A)
Q36: The Precambrian supereon,in which life first appeared,and
Q37: The first vascular plants evolved during the
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