Owens, B., Marshall, J.E.A., Telnova, O.P. et al. (1 more author) (2022) Morphological relationships of Ancyrospora species from the Givetian and Frasnian deposits of the Pan-Arctic region. Paleontological Journal, 56 (9). pp. 1032-1054. ISSN 0031-0301
Abstract
Miospores with spines that have bifurcate tips and an equatorial flange from the genus Ancyrospora were an important part of the Mid and Late Devonian spore flora. A number of the early species were described from the Arctic regions of both Canada (Nunavut) and the Timan, Russia. The history of the genus Ancyrospora is reviewed, rediagnosed and compared with Hystricosporites and Nikitinsporites two genera that also possess bifurcate tipped spines. Material from Arctic Canada and Russia was investigated to compare the Givetian and Frasnian species of Ancyrospora that were described in early publications by McGregor, Owens, and Naumova. The species Ancyrospora ampulla, A. melvillensis, A. simplex, A. incisa, A. arguta, A. laciniosa and A. polyacantha are illustrated and described using the same terminology including profiles of the bifurcate sculptural elements. Morphological lineages are recognised between the different species and the Ancyrospora melvillensis morphon defined. Comparative range charts are presented from both Arctic Canada and Russia. Many of the taxonomic issues in comparing Canadian and Russian Ancyrospora are resolved.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 Pleiades Publishing, Ltd. This is an author-produced version of a paper subsequently published in Paleontological Journal. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Devonian; miospores; Ancyrospora; Arctic Canada; Russia; taxonomy; stratigraphy |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Feb 2023 12:36 |
Last Modified: | 26 Dec 2023 01:13 |
Status: | Published |
Publisher: | Pleiades Publishing Ltd |
Refereed: | Yes |
Identification Number: | 10.1134/s0031030122090052 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:196116 |