Stromatolites are _____. a type of fossil dinosaur. produced by cyanobacteria. the earliest mammals. the earliest fossils. found as early as the Archean era.
(1) Answers
The correct answer is "produced by cyanobacteria". They are a type of fossil however, except they are not produced by dinosaurs, nor are they mammals, nor are they found as early as the Archean era.
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