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A review of the Triassic pollen Staurosaccites: systematic and phytogeographical implications
Swedish Museum of Natural History, Department of Paleobiology. aState Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing.
Swedish Museum of Natural History, Department of Paleobiology.ORCID iD: 0000-0003-1766-3516
Swedish Museum of Natural History, Department of Paleobiology. Department of Geology, Lund University, Sweden.ORCID iD: 0000-0003-2987-5559
2021 (English)In: Grana, ISSN 0017-3134, E-ISSN 1651-2049, Vol. 60, no 6, p. 407-423Article in journal (Refereed) Published
Abstract [en]

Staurosaccites, a highly distinctive pollen genus, ranges from the late Anisian (Pelsonian; Middle Triassic) to the Norian, at low tomid latitudes, globally. Here we review the systematic taxonomy and spatial and temporal ranges of Staurosaccites. We provide anemendation to S. tharipatharensis, synonymise S. minutus with the type species S. quadrifidus, and retain the species S. quadrifidus, S. tharipatharensis, S. densus and S. marginalis. Following comparison with morphologically similar pollen and environmental reconstructions of the habitat of its parent plant, we hypothesise that Staurosaccites was produced by a conifer that was likely adapted to warm and humid conditions. Based on occurrences of diagnostic taxa for the Onslow and Ipswich microfloral provinces in the Southern Hemisphere (Staurosaccites, Camerosporites, Enzonalasporites, Infernopollenites and Ovalipollis), we show that these palynofloras were established in the Middle Triassic. Our findings further suggest that, based on the presence of diagnostic taxa in western Laurasia and their absence in eastern Laurasia, western and eastern Laurasia represent different palynofloral provinces in the Middle Triassic.

Place, publisher, year, edition, pages
London: Taylor & Francis, 2021. Vol. 60, no 6, p. 407-423
Keywords [en]
Onslow Microflora, Ipswich Microflora, palynology, bisaccate pollen, conifer, phytogeography, Anisian, Gondwana, Laurasia, Xizang (Tibet) China
National Category
Other Earth and Related Environmental Sciences
Research subject
Diversity of life; The changing Earth
Identifiers
URN: urn:nbn:se:nrm:diva-4452DOI: 10.1080/00173134.2021.1944301OAI: oai:DiVA.org:nrm-4452DiVA, id: diva2:1618092
Funder
Carl Tryggers foundation , CTS 19: 380Swedish Research Council, 2019-04524Swedish Research Council, 2019-04061
Note

Also funded by the National Natural Sciences Foundation of China (NSFC 42002003) and the State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) (20182110)

Available from: 2021-12-01 Created: 2021-12-08Bibliographically approved

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Publisher's full texthttps://doi.org/10.1080/00173134.2021.1944301

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