Gogia
Gogia | |
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G. kitchnerensis specimen from Utah | |
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A colourful reconstruction of G. ojenai | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Subphylum: | †Blastozoa |
Class: | Eocrinoidea |
Order: | Gogiida |
Family: | Eocrinidae |
Genus: | Gogia Walcott 1917 |
Type species | |
G. prolifica | |
Species | |
Synonyms | |
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Gogia is a genus of primitive eocrinoid blastozoan from the early to middle Cambrian.
G. ojenai dates to the late Early Cambrian;[3] other species come from various Middle Cambrian strata throughout North America, but the genus has yet to be described outside this continent.[2] Notable localities where species are found include the Wheeler Shale of Utah,[4] and the Burgess Shale of British Columbia.
The species of Gogia, like other eocrinoids, were not closely related to the true crinoids, instead, being more closely related to the blastoids.
![](../I/m/Gogia_radiata.jpg)
Gogia is distinguished from sea lilies, and most other blastoids, in that the plate-covered body was shaped like a vase, or a bowling pin (with the pin part stuck into the substrate), and that the five ambulacra were split into pairs of coiled or straight, ribbon-like strands. Six specimens of Gogia are known from the Greater Phyllopod bed, where they comprise < 0.1% of the community.[5]
As a whole, the Eocrinoids are regarded as basal blastozoans very close to the ancestry of the entire subphylum.
External links
- "Gogia stephenensis". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011.
References
- ↑ Redescribed in Harker, P.; Hutchinson, R. D. (1953). "A New Occurrence and Redescription of Gogia prolifica Walcott". Journal of Paleontology. 27 (2): 285–287. doi:10.2307/1300058 (inactive 2018-09-26). JSTOR 1300058.
- 1 2 3 4 5 6 Robison, R. A. (1965). "Middle Cambrian Eocrinoids from Western North America". Journal of Paleontology. 39 (3): 355–364. doi:10.2307/1301709 (inactive 2018-09-26). JSTOR 1301709.
- 1 2 Durham, J. W. (1978). "A Lower Cambrian Eocrinoid". Journal of Paleontology. 52 (1): 195–199. doi:10.2307/1303808 (inactive 2018-09-26). JSTOR 1303808.
- ↑ https://gsa.confex.com/gsa/2007AM/finalprogram/abstract_130823.htm
- ↑ 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.