Biology:Yuknessia
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Short description: Genus of marine worm-like animals
Yuknessia Temporal range: Chengjiang-Burgess Shale
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Genus: | Yuknessia Walcott, 1919
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Yuknessia is an early pterobranch, known from the Burgess shale,[1] the Chengjiang and the Wheeler shale.[2] Long, unbranched fronds emerge from a central holdfast-like body covered in small conical plates.[1] 23 specimens of Yuknessia are known from the Greater Phyllopod bed, where they comprise < 0.1% of the community.[3] The genus contains two species: the type species Y. simplex and Y. stephenensis.[2] It was originally interpreted as a green alga, and has since been reinterpreted it as a colonial pterobranch.[2][4][5]
References
- ↑ 1.0 1.1 Briggs, D. E. G.; Erwin, D. H.; Collier, F. J. (1995), Fossils of the Burgess Shale, Washington: Smithsonian Inst Press, ISBN 1-56098-659-X, OCLC 231793738
- ↑ 2.0 2.1 2.2 Steven T. LoDuca; Jean-Bernard Caron; James D. Schiffbauer; Shuhai Xiao; Anthony Kramer (2015). "A reexamination of Yuknessia from the Cambrian of British Columbia and Utah". Journal of Paleontology 89 (1): 82–95. doi:10.1017/jpa.2014.7. Bibcode: 2015JPal...89...82L.
- ↑ 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. Bibcode: 2006Palai..21..451C.
- ↑ Michael Steiner; Jörg Maletz (2012). "Cambrian graptolites (Pterobranchia) and the origin of colonial organization in metazoans". TERRA NOSTRA – Schriften der GeoUnion Alfred-Wegener-Stiftung. Centenary Meeting of the Paläontologische Gesellschaft. Programme, Abstracts, and Field Guides 2012/3: 173–174. http://www.palaeo100.naturkundemuseum-berlin.de/fileadmin/startseite/palaeo100/Tagungsband.pdf.
- ↑ Maletz, Jörg; Steiner, Michael (2015). "Graptolite (Hemichordata, Pterobranchia) preservation and identification in the Cambrian Series 3". Palaeontology 58 (6): 1073–1107. doi:10.1111/pala.12200. Bibcode: 2015Palgy..58.1073M.
External links
- "Yuknessia simplex". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011. (Burgess Shale species 136)
Wikidata ☰ Q16911288 entry
Original source: https://en.wikipedia.org/wiki/Yuknessia.
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