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Yunnanozoon

From Simple English Wikipedia, the free encyclopedia
Fossil of Yunnanozoon lividum

Yunnanozoon lividum is an extinct species of marine chordate from the Yunnan province, China. It resided in the Cambrian period. about 520 mya ago.

Morphology

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The Yunnanozoon resembles a craniate and has a fusiform [en] body and pharyngeal teeth. Towards the front are 7 filamentous arches, which were covered by sacs. Towards the back of the body is a gut. The front half contains rods.

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Fossil and anatomy of Y. lividum
Illustration

References

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  1. "Reinterpretation of Yunnanozoon as the earliest known chordate". Nature.
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