Gogia
Gogia Temporal range: Late Early Cambrian–Middle Cambrian PreꞒ Ꞓ O S D C P T J K Pg N | |
---|---|
![]() | |
G. kitchnerensis specimen from Utah | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Class: | †Eocrinoidea |
Order: | †Gogiida |
Family: | †Eocrinidae |
Genus: | †Gogia Walcott 1917 |
Type species | |
†G. prolifica | |
Species | |
| |
Synonyms | |
|
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/16/Gogia_ojenai.jpg/170px-Gogia_ojenai.jpg)
![fossil eocrinoid Gogia spiralis](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Gogia_spiralis_USNM.jpg/220px-Gogia_spiralis_USNM.jpg)
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.[citation needed]
The species of Gogia, like other eocrinoids, were not closely related to the true crinoids, instead, being more closely related to the blastoids.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Gogia_radiata.jpg/220px-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.
References
- ^ Harker, P.; Hutchinson, R. (1953). "A New Occurrence and Redescription of Gogia prolifica Walcott". Journal of Paleontology. 27 (2): 285–287. JSTOR 1300058.
- ^ a b c d e f Robison, R. A. (1965). "Middle Cambrian Eocrinoids from Western North America". Journal of Paleontology. 39 (3): 355–364. JSTOR 1301709.
- ^ a b Durham, J. (1978). "A Lower Cambrian Eocrinoid". Journal of Paleontology. 52 (1): 195–199. JSTOR 1303808.
- ^ "Paleoecology of the Middle Cambrian Eocrinoid Echinoderm Gogia Spiralis: Possible Changes in Substrate Adaptations Through Ontogeny".
- ^ Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. Bibcode:2006Palai..21..451C. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022. S2CID 53646959.
External links
- "Gogia stephenensis". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011. Archived from the original on 2020-11-12. Retrieved 2023-01-21.
- v
- t
- e