trilobite

Olenoides. © Royal Ontario Museum. Photo Jean-Bernard Caron

Trilobite sex

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Trilobite species Olenoides serratus, has been well studied since 1909 and is one of the most fully understood trilobites in the fossil record, due to the exceptional preservation of soft tissues (labile tissue) at the Burgess Shale. Now after over 100 years of studying the species, and half a billion years since its extinction, scientists […]

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Sidneyia fossil with Sidneyia model

The Cambrian Explosion and the Burgess Shale

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Cambrian Explosion The early Cambrian period marks one of the most spectacular evolutionary events in the history of life – The Cambrian Explosion. This was an explosion of life. Within ten million years, a very short period geologically, a host of hard-body and soft-body animals appeared in the fossil record. Trilobites, molluscs, chordates, cnidarians, brachiopods and

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