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First records from Laurentia of some middle Cambrian (Series 3) sponge spicules
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2017 (English)In: Alcheringa, ISSN 0311-5518, E-ISSN 1752-0754, Vol. 41, no 3, p. 306-314Article in journal (Refereed) Published
Abstract [en]

Spicules of the sponges Silicunculus Bengtson, Australispongia Dong & Knoll and Thoracospongia Mehl are described from the middle Cambrian (Cambrian Series 3) of North Greenland. The occurrences document the first records from the Cambrian of Laurentia of spicules initially reported from Australia. Obese spicules of Thoracospongia are now known to occur in strata of Cambrian Series 2 (Stage 4, Botoman) to Cambrian Series 3 (Stage 5 and Drumian) age in Australia, northern and southeastern Siberia and in the uppermost Henson Gletscher Formation (Cambrian Series 3, Stage 5) of western Peary Land. Morphologically similar obese spicules from the USA, Jordan, Iran and Sweden suggest an evolutionary trend towards armouring of the outer sponge surface during the middle and late Cambrian. New species described are Silicunculus saaqqutit sp. nov., Thoracospongia lacrimiformis sp. nov.

Place, publisher, year, edition, pages
2017. Vol. 41, no 3, p. 306-314
Keywords [en]
sponge spicules, Hexactinellida, Cambrian (Series 3), Greenland, Laurentia
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-335541DOI: 10.1080/03115518.2017.1282983ISI: 000408903200002OAI: oai:DiVA.org:uu-335541DiVA, id: diva2:1163681
Available from: 2017-12-07 Created: 2017-12-07 Last updated: 2017-12-07Bibliographically approved

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Peel, John S.

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