Multiple Choice
Which type of microfossils have tests (hard parts) made of calcium carbonate and are useful as index fossils as well as for measuring past sea temperatures and climates since the Cretaceous?
A) coccoliths and formaminifera
B) diatoms and radiolaria
C) conodonts
D) acritarchs and dinoflagellates
Correct Answer:
Verified
Correct Answer:
Verified
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