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Members of the ____ Subphylum Are Now All Extinct, but They

Question 60

Multiple Choice

Members of the ____ subphylum are now all extinct, but they were extremely numerous in shallow Paleozoic seas. Most of them were dorsoventrally flattened and heavily armored, with two deep longitudinal grooves that gave their body a three-lobed appearance.


A) Myriapoda
B) Trilobita
C) Chelicerata
D) Hexapoda
E) Crustacea

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