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Middle Cambrian (Wuliuan Stage) Small Shelly Fossils from North Greenland (Laurentia)
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.ORCID iD: 0000-0002-1774-7931
2025 (English)In: Bulletin of Geosciences, ISSN 1214-1119, E-ISSN 1802-8225, Vol. 100, no 1, p. 1-56Article in journal (Refereed) Published
Abstract [en]

Acid residues from the Henson Gletscher Formation of North Greenland have yielded the most diverse assemblage of Small Shelly Fossils (SSF) known from the middle Cambrian (Miaolingian Series) of Laurentia. The fossils derive from the Wuliuan Stage (Ptychagnostus gibbus Biozone; Topazan Regional Stage of North America) and compare with faunas from the Ordian-Templetonian regional stages of Australia and the Kuonamka Formation of Northern Siberia, making a valuable contribution to world-wide early Miaoliongian correlation. The assemblage is dominated by 21 species of helcionelloid molluscs, a third of which are referred to Dorispira Parkhaev, 2010. Mellopegma Runnegar & Jell, 1976 and Erugoconus Peel & Kouchinsky, 2022, are also conspicuous. Hyoliths include the operculate Protowenella Runnegar & Jell, 1976, Crestjahitus Sysoev, 1968 and Yuku? Kruse, 2002. Diverse form taxa of sponge spicules are also well represented in Siberia and Australia. The phosphatocopid Dabashanella Huo, Shu, & Fu, 1983, well known from China, is abundant. Diagenetic phosphatization of soft parts is common in bivalved arthropods, but rare cases include Dietericambria Peel, 2022a, the oldest known pentastomid, and a priapulid larva. Preservation as phosphatic internal moulds is otherwise characteristic. Multiaxial organisms include cnidarians and epiphytiform taxa of uncertain position. The stem group octocoral Cambroctoconus Park, Woo, Lee, Lee, Lee, Han, Chough & Choi, 2011, described from China and Kyrgyzstan, is common. Bromalites and casts of euendolith galleries are abundant and diverse in form. New taxa: Crestjahitus groenlandicus sp. nov., Dabashanella? lunaiformis sp. nov., Hensonidendra tavsenica gen. et sp. nov., Hensonidendra hensoniensis gen. et sp. nov., Laugephakos groenlandicus gen. et sp. nov., Liangshanella? qassutit sp. nov., Tavsenicoralla avannaa gen. et sp. nov.

Place, publisher, year, edition, pages
Czech Geological Survey , 2025. Vol. 100, no 1, p. 1-56
Keywords [en]
Small Shelly Fossil, Cambrian, Miaolingian, Wuliuan, North Greenland, Laurentia
National Category
Geology Other Earth Sciences
Identifiers
URN: urn:nbn:se:uu:diva-559315DOI: 10.3140/bull.geosci.1912ISI: 001500495200001Scopus ID: 2-s2.0-105007108544OAI: oai:DiVA.org:uu-559315DiVA, id: diva2:1971125
Available from: 2025-06-17 Created: 2025-06-17 Last updated: 2025-06-17Bibliographically approved

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Peel, John Stuart

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