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https://hdl.handle.net/1959.11/20453
Title: | The operculum and mode of life of the lower Cambrian hyolith 'Cupitheca' from South Australia and North China | Contributor(s): | Skovsted, Christian B (author); Pan, Bing (author); Topper, Timothy P (author); Betts, Marissa (author) ; Li, Guoxiang (author); Brock, Glenn A (author) | Publication Date: | 2016-02-01 | Open Access: | Yes | DOI: | 10.1016/j.palaeo.2015.11.042 | Handle Link: | https://hdl.handle.net/1959.11/20453 | Open Access Link: | http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-1812 | Abstract: | The operculum of the problematic tubular fossil 'Cupitheca holocyclata' Bengtson in Bengtson et al., (1990) is described for the first time based on collections from South Australia and North China. The phosphatized sub-circular operculum exhibits well defined cardinal processes and a narrow cardinal shield unequivocally demonstrating that 'Cupitheca' is a hyolith, probably an orthothecid. 'C. holocyclata' has an almost global distribution in Cambrian Stages 3-4. The apical structure of the operculum is an elevated, disc-shaped platform with a concave base and a marginal rim that could represent the scar of a specialized larval attachment structure, perhaps anchoring the larval hyolith to a sediment grain, algae or other benthic substrate. 'Cupitheca' probably had a pelagic larval stage and settled on the seafloor by attachment of the apical disc to suitable substrates before developing a free-living benthic adult lifestyle. This contrasting mode of life compared to other hyolith genera suggests that the group had already evolved a range of distinct lifestyles in the Cambrian, providing significant clues into their ecology and distribution. | Publication Type: | Journal Article | Grant Details: | ARC/120104251 | Source of Publication: | Palaeogeography, Palaeoclimatology, Palaeoecology, v.443, p. 123-130 | Publisher: | Elsevier BV | Place of Publication: | Netherlands | ISSN: | 1872-616X 0031-0182 |
Fields of Research (FoR) 2008: | 040308 Palaeontology (incl. Palynology) | Fields of Research (FoR) 2020: | 370506 Palaeontology (incl. palynology) | Socio-Economic Objective (SEO) 2008: | 970106 Expanding Knowledge in the Biological Sciences 970104 Expanding Knowledge in the Earth Sciences |
Socio-Economic Objective (SEO) 2020: | 280102 Expanding knowledge in the biological sciences 280107 Expanding knowledge in the earth sciences |
Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article |
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