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Scientists believe that the oldest known fossil discoveries to date are that of _________. A. ammonites B. trilobites C. Tyrannosaurus rex D. stromatolites
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Scientists believe that the oldest known fossil discoveries to date are that of _________.

A. ammonites
B. trilobites
C. Tyrannosaurus rex
D. stromatolites

User Jeff Reddy
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2 Answers

7 votes
Scientists believe that the oldest known fossil discoveries to date are that of stromatolites. ca: 3.7 billion years old.
User Nico Rikken
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8.6k points
3 votes
a is the correct answer because the oldest fossil known as at the very bottom so they are ammonites
User Yinkou
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