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The oldest known fossils Group of answer choices all of the choices. are microscopic. are that of prokaryotes. date back 2.5 billion years ago.
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The oldest known fossils Group of answer choices all of the choices. are microscopic. are that of prokaryotes. date back 2.5 billion years ago.

User Bgraves
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User Gpupo
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Answer:

Cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old. Cyanobacteria are among the easiest microfossils to recognize

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User Annemieke
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