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Polychaeta source details
Zhao, Jun; Li, Yujing; Selden, Paul A. (2023). A new primitive polychaete with eyes from the lower Cambrian Guanshan biota of Yunnan Province, China. Frontiers in Ecology and Evolution. 11: 1128070: 1-8.
483288
10.3389/fevo.2023.1128070 [view]
urn:lsid:zoobank.org:pub:54120A6E-2195-478E-A924-E686FD88D633 [view]
Zhao, Jun; Li, Yujing; Selden, Paul A.
2023
A new primitive polychaete with eyes from the lower Cambrian Guanshan biota of Yunnan Province, China
Frontiers in Ecology and Evolution
11: 1128070: 1-8
Publication
Annelidabase
Annelids are abundant and speciose in the modern world but are comparatively few in the fossil record. Primitive annelids were expected to have developed eyes and nuchal organs, but until now definitive evidence is still lacking. Based on a new specimen from the Wulongqing Formation, we describe Gaoloufangchaeta bifurcus gen. et sp. nov. from the Guanshan biota (Cambrian Series 2, Stage 4) of Yunnan province, China. The overall profile of the body and the presence of tentacles and stout parapodia with simple chaetae establish it as a primitive polychaete. By bearing bicellular eyes and possible nuchal organs, the new form has developed relatively strong sensory abilities. Our material further confirms that polychaetes were already diverse by Cambrian Series 2, indicating a much earlier origin for the group.
China
Paleontology, Fossils, Paleobiology
Systematics, Taxonomy Date action by
Gaoloufangchaeta Zhao, Li & Selden, 2023 † (original description)
Gaoloufangchaeta bifurcus Zhao, Li & Selden, 2023 † (original description)
Holotype RCP-ZJ-0001, Research Center of Paleobiology, Yuxi Normal University (RCP), geounit China, identified as Gaoloufangchaeta bifurcus Zhao, Li & Selden, 2023
Diagnosis Body tripartite (tentative) and elongated, bearing a pair of tentacles, bicellular eyes, and possible nuchal ... [details] Etymology authors: Gaoloufangchaeta is a compound of "Gaoloufang, referring to the location where the fossil was found [and] ... [details] Grammatical gender The authors contribute no information on the gender of the new genus, apart from the spelling they use. However, ... [details] Spelling As the genus Gaoloufangchaeta is feminine because chaeta is feminine (code article 30.1), the species-group ... [details] Type locality Gaoloufang section, Kunming, Yunnan, China, horizon of Wulongqing Formation (Cambrian Series 2, Stage 4), ... [details] |