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During which period did the first land vertebrates appear? A. Devonian B. Mississippian C. Pennsylvanian D. Permian
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During which period did the first land vertebrates appear?

A. Devonian
B. Mississippian
C. Pennsylvanian
D. Permian

User Bodger
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1 Answer

3 votes
the answer is D. permian
User DoubleOrt
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