Data from: Lycopsid megaspores from the Upper Triassic of Svalbard and their relationship to the floras and palaeoenvironments of northern Pangaea ...

• Main Authors: Paterson, Niall, Morris, Peter, Mangerud, Gunn
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: Kutsevella haplophragmoides; Darwinulina; Psammosphaera; Kutsevella; Triassic; Horstisporites; Ammodiscus peruvianus; megaspores; Carnian; Cytherella plattensis; Asciocythere; Ammodiscus clavata; Vemeuilinoides; Aratrisporites macrocavatus; Rhaetian; Gaudryina adoxa; Glomospirella; Lagenammina inanis; Nathorstisporites hopliticus; Verneuilinoides kirillae; Ogmoconcha owthorpensis; Ammodiscus incertus; micro-biofacies; Trochammina eoparva; Ammodiscus yonsnabensis; Calamospora rhaetica; Ammoglobigerina; Glomospira irregularis; Recurvoides; Lituotuba perplexa; Hyperammina; Palynology; Echitriletes prerussus; Aratrisporites fimbriatus; Glomospira gordialis; Saccammina; Thurammina; Aratrisporites granulatus; Aratrisporites fischeri; Spiroplectammina; Dentalina; Aratrisporites laevigatus; Trileites; Echitriletes; Aratrisporites scabratus; Norian; Verrutriletes utilis; Nodulina liasica; Caudammina; Trochammina; Arctic; Svalbard; Norway; Paterson; Hopen; De Geerdalen; Kapp Toscana; Flatsalen; Lyngefjellet; Svenskøya
• Online Access: https://dx.doi.org/10.5061/dryad.1mn51s6; https://datadryad.org/stash/dataset/doi:10.5061/dryad.1mn51s6

Triassic megaspore assemblages from Svalbard, Arctic Norway, are described for the first time based on the analysis of the Upper Triassic (Carnian–Norian/Rhaetian) Kapp Toscana Group on the island of Hopen. Two megaspore zones are described: the late Carnian ‘Dijkstraisporites beutleri Zone’ (undifferentiated De Geerdalen Formation), and the Norian/Rhaetian ‘D. beutleri – Verrutriletes preutilis Zone’ (Svenskøya Formation). Megaspores are attributed to heterosporous lycopsids, and likely correspond to the microspore Aratrisporites, which was observed in palynological preparations. Megaspore occurrence was highest in delta-plain and associated with lake-mire deposits. However, their close association with marine microfossils suggests episodic marine influence, and is consistent with previous interpretations that some Triassic lycopsids occupied marginal marine habitats. The absence of megaspores in the overlying Hopen Member and Flatsalen Formation is likely related to a marine transgression during the early ... : Supplement 1. Binnedalen range chartMicropalaeontological and micro-biofacies distribution chart for the Binnedalen section, Hopen. Microfossil occurrences marked with an asterisk were previously reported in Paterson et al. (2016). Relative abundances of palynomorph groups are based on Paterson & Mangerud (2015). Sedimentary log after Mørk et al. (2013).Supplement 2. Lyngefjellet range chartMicropalaeontological and micro-biofacies distribution chart for the Lyngefjellet section. Microfossil occurrences marked with an asterisk were previously reported in Paterson et al. (2016). Relative abundances of palynomorph groups are based on Paterson & Mangerud (2015). Sedimentary log after Mørk et al. (2013).Supplement 3. Blåfjell range chartMicropalaeontological and micro-biofacies distribution chart for the Blåfjell section. Microfossil occurrences marked with an asterisk were previously reported in Paterson et al. (2016). Relative abundances of palynomorph groups are based on Paterson & Mangerud ...