Multiple Choice
Which of the following is an essential characteristic of an index fossil?
A) The organism lived only in specific environments such as beaches or estuaries.
B) The organism only lived for a short span of geologic time but was very widespread.
C) The fossils are exceptionally abundant for a long time span and readily preserved.
D) The fossils occur in deep-water marine sediments, but the organism actually lived in the sunlit, surface layer of the ocean.
Correct Answer:
Verified
Correct Answer:
Verified
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