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#trilobite_zone

Trilobite zone

Index fossils to subdivide the Cambrian period

Trilobites are used as index fossils to subdivide the Cambrian period. Assemblages of trilobites define trilobite zones. The Olenellus-zone has traditionally marked the top of the Lower Cambrian, and is followed by the Eokochaspis zone.

Wed 24th

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Trilobite zone Trilobite 2018 in arthropod paleontology Dresbachian Flexicalymene Poleta Formation Marjum Formation Furongian Illtyd Formation Ovatoryctocara granulata
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