Fossils of the Cambrian Period Arthropods from the Burgess shale, such as the trilobite Olenoides (left) and a chelicerate called Sidneyia (right), exploded in morphological diversity following the so-called Cambrian Explosion. (via: Live Science)             (photo: Smithsonian Institution, Courtesy of Douglas Erwin) View high resolution

Fossils of the Cambrian Period

Arthropods from the Burgess shale, such as the trilobite Olenoides (left) and a chelicerate called Sidneyia (right), exploded in morphological diversity following the so-called Cambrian Explosion.

(via: Live Science)            

(photo: Smithsonian Institution, Courtesy of Douglas Erwin)

Notes

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