By Middle Cretaceous, __________ became the primary builder of low organic banks on the shallow seafloor.
A) neogastropoda
B) rudists
C) hexacorals
D) cheilostomes
Correct Answer:
Verified
Q10: During Cretaceous, planktonic _ diversified greatly for
Q11: The evolutionary step that allowed flowering plants
Q12: Adaptive radiations of these two groups altered
Q13: During Cretaceous, the primary change among phytoplankton
Q14: Hesperornis was a
A) marine lizard.
B) marine turtle.
C)
Q16: New members of the Cretaceous pelagic food
Q17: During Cretaceous, the birds were more like
Q18: Late Cretaceous was a time of _
Q19: Sea level stood perhaps as high throughout
Q20: The greatest change in terrestrial ecosystems during
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