The first vertebrates to achieve flight were ____________________.
Correct Answer:
Verified
Q50: Rare in crustal rocks, but abundant in
Q51: Mesozoic plants and animals occupied _.
A) small
Q52: The distinction between the Ornithischian and Saurischian
Q53: Which observation would undermine, and not provide
Q54: _ were short or long-necked marine reptiles
Q56: Flowering plants called _ flourished in the
Q57: The two major groups of dinosaurs were
Q58: Paleozoic and Mesozoic marine invertebrate faunas differ
Q59: The mammal-like reptiles at the end of
Q60: Fossils of Archaeopteryx are important because they
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