Which of the following organisms first evolved during the Cambrian Explosion?
A)cyanobacteria
B)dinosaurs
C)trilobites
D)mammals

Name: Which of the following organisms first evolved during the Cambrian Explosion? A)cyanobacteria B)dinosaurs C)trilobites D)mammals
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Question

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Trilobites first evolved during the Cambrian Explosion. Cyanobacteria are much older and were present during the Proterozoic eon. Dinosaurs and mammals evolved much later, during the Mesozoic era.

Which of the Following Organisms First Evolved During the Cambrian