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Permian spiriferellid brachiopods from northern Pangaea: taxonomy, biostratigraphy, macroevolution and implications for palaeoenvironmental and palaeobiogeographical reconstructions

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Cited 1 time in scopus
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Title
Permian spiriferellid brachiopods from northern Pangaea: taxonomy, biostratigraphy, macroevolution and implications for palaeoenvironmental and palaeobiogeographical reconstructions
Other Titles
판게아 북반구의 페름기 spiriferellid 완족동물: 분류학, 생층서학, 대진화와 고환경 및 고지리학적 복원을 위한 의미
Authors
Lee, Sangmin
Shi, G. R.
Woo, Jusun
Park, Tae-Yoon S.
Oh, Jae-Ryong
Kim, Na Kyung
Nakrem, Hans A.
Tazawa, Jun-Ichi
Subject
Evolutionary Biology; Paleontology
Keywords
Arcullina; Edrimatus; Kapp Starostin Formation; Spiriferella; Spitsbergen; Timaniella
Issue Date
2019-11
Citation
Sangmin Lee, et al. 2019. "Permian spiriferellid brachiopods from northern Pangaea: taxonomy, biostratigraphy, macroevolution and implications for palaeoenvironmental and palaeobiogeographical reconstructions". JOURNAL OF SYSTEMATIC PALAEONTOLOGY, 17(22): 1871-1925.
Abstract
This study reports diverse spiriferellid brachiopods from the Permian rocks of Svalbard and adjacent areas (Arctic Canada and Subpolar Urals of Russia) located at the northern margin of Pangaea. In total, 11 brachiopod species in four genera are recognized and described in detail, including two new species (Spiriferella protodraschei and Arcullina? enokiani). According to our taxonomic investigation, morphological characteristics of the ventral sulcus and dorsal fold are relatively stable within each species, in spite of considerable intraspecific variations in shell outline and macro-ornamentation. In addition, both the arrangement of pustules, as a shell surface micro-ornamentation, and the development of delthyrial coverings are shown to be significant features for inferring phylogenetic relationships and for defining species. The best-known but still questionable taxon, Spiriferella keilhavii, is here identified as an endemic species restricted to Bjørnøya and, possibly, to central East Greenland; it is phylogenetically closest to S. loveni. Following the taxonomic revision, the stratigraphical ranges of the spiriferellids within the Kapp Starostin Formation in Spitsbergen are fully refined: three species, S. protodraschei, A. polaris and Timaniella wilczeki, are confined to the lowermost Vøringen Member (late Artinskian?early Kungurian), whereas S. loveni dominates the overlying members with a much longer stratigraphical range (late Kungurian?Lopingian?). This abrupt compositional change, along with comparable changes in other taxonomic groups, can be explained by a palaeoclimatic shift from cool to cold conditions between the Vøringen Member and the overlying Svenskeegga member. A similar biotic transition is identified between the Hambergfjellet and Miseryfjellet formations in Bjørnøya. On the other hand, S. loveni is abundant in the Late Permian strata of central East Greenland, but there it appears to be more costate in plication compared to its counterpart from Spitsbergen. It is suggested that this alteration in shell ornamentation may represent a possible response (adaptation) to warming arising from the southward migration of the species.
URI
https://repository.kopri.re.kr/handle/201206/10980
DOI
http://dx.doi.org/10.1080/14772019.2019.1570569
Appears in Collections  
2018-2018, Early animal evolution and the primitive Earth system of north Greenland (18-18) / Park, Tae-Yoon S. (PE18160)
2017-2018, Early animal evolution and the primitive Earth system of north Greenland (17-18) / Park, Tae-Yoon S. (PE17160; PE18160)
2014-2016, Environmental Change Studies Based on The Arctic Dasan Station: in terms of Geology, Atmospheric Science, and Ecology (14-16) / Lee; Yookyung (PE14030; PE15030; PE16030)
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