Protospongia
| hicksi Temporal range: Burgess Shale–Late Cambrian[1] | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | "Porifera" |
| Class: | Hexactinellida |
| Order: | †Reticulosa |
| Genus: | †Protospongia |
| Species: | †P. hicksi |
| Binomial name | |
| Protospongia hicksi Hinde, 1888[2] | |
Protospongia is a genus of Porifera known from the Middle Cambrian Burgess Shale. 102 specimens of Protospongia are known from the Greater Phyllopod bed, where they comprise 0.19% of the community.[3]
Description
Modern sponges are widely agreed to be descendents of the earliest cell colonies that evolved into modern animals. The earliest fossil evidence for sponges are tiny sponge spicules, which first appeared very close to the end of the Proterozoic era. They probably evolved as protection, as well as support, during the great arms race at the start of the Cambrian explosion.
External links
- "Protospongia hicksi". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011.
References
- ↑ Botting, J. (2007). "'Cambrian' demosponges in the Ordovician of Morocco: Insights into the early evolutionary history of sponges". Geobios. 40 (6): 737–748. doi:10.1016/j.geobios.2007.02.006.
- ↑ A monograph of the British fossil sponges. Hinde, G. J., 1888, Part 2, 93-188
- ↑ Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022.
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