Choia

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Choia
Fossil range: Cambrian
Scientific classification
Kingdom: Animalia
Subkingdom: Parazoa
Phylum: Porifera
Class: Demospongiae
Genus: Choia
Species
  • Choia carteri
  • Choia xiaolantianensis
  • Choia utahensis

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Choia is a fossil demosponge from the Cambrian period. It was unusual because it was not attached to the sea bed, and radiated spines from the edge of its flattish, conical body. It was 2 or 3 centimetres across.

Fossils of Choia have been found in the Burgess Shale in British Columbia, the Maotianshan shales of China and the Wheeler Shale in Utah.

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