Marianne Collins, ArtofFact, CC BY-NC-ND
Arthropods first appear in the fossil record some 530 million years ago. These joint-legged animals are the most species-rich and diverse animal group on Earth. The familiar creatures are...
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Arthropods first appear in the fossil record some 530 million years ago. These joint-legged animals are the most species-rich and diverse animal group on Earth. The familiar creatures are...
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