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A problematic cnidarian (Cambroctoconus; Octocorallia?) from the Cambrian (Series 2-3) of Laurentia
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2017 (English)In: Journal of Paleontology, ISSN 0022-3360, E-ISSN 1937-2337, Vol. 91, no 5, p. 871-882Article, review/survey (Refereed) Published
Abstract [en]

The problematic calcified cnidarian Cambroctoconus is described from the Henson Gletscher Formation (Cambrian Series 2, Stage 4-Series 3, Stage 5) of North Greenland, representing the first record from Laurentia of a genus otherwise recently described from China, Kyrgyzstan, and Korea. Internal molds produced by penetrative phosphatization mirror the pervasive pore system of the calice walls and septa. The pore system is compared to the network of gastrodermal solenia that distributes nutrients between polyps and surrounding stolon tissues in present day octocorals. In conjunction with the octagonal form of the individual coralla and eight-fold symmetry of septa, the pore system promotes assignment of Cambroctoconus to the Octocorallia, a basal clade in cnidarian phylogeny. Octocorals ('soft corals') are diverse in present day seas, but have a poor fossil record despite the general development of distinctive calcareous spicules. New taxa: Order Cambroctoconida new; Cambroctoconus koori new species.

Place, publisher, year, edition, pages
2017. Vol. 91, no 5, p. 871-882
National Category
Geology
Identifiers
URN: urn:nbn:se:uu:diva-345879DOI: 10.1017/jpa.2017.49ISI: 000409050200002OAI: oai:DiVA.org:uu-345879DiVA, id: diva2:1190054
Available from: 2018-03-13 Created: 2018-03-13 Last updated: 2018-03-19Bibliographically approved

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Peel, John Stuart

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