Morphological relationships of Ancyrospora species from the Givetian and Frasnian deposits of the pan-Arctic region
Morphological relationships of Ancyrospora species from the Givetian and Frasnian deposits of the pan-Arctic region
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.
1032-1054
Owens, B.
d019823a-7b4d-404d-9f9c-d6a79a0b57b5
Marshall, J.E.A.
cba178e3-91aa-49a2-b2ce-4b8d9d870b06
Telnova, O.P.
80b665b6-ebd1-4966-a549-897003be1444
Wellman, Ch. H.
508e1b0c-bb06-4723-bd7c-bd889fa83791
26 December 2022
Owens, B.
d019823a-7b4d-404d-9f9c-d6a79a0b57b5
Marshall, J.E.A.
cba178e3-91aa-49a2-b2ce-4b8d9d870b06
Telnova, O.P.
80b665b6-ebd1-4966-a549-897003be1444
Wellman, Ch. H.
508e1b0c-bb06-4723-bd7c-bd889fa83791
Owens, B., Marshall, J.E.A., Telnova, O.P. and Wellman, Ch. H.
(2022)
Morphological relationships of Ancyrospora species from the Givetian and Frasnian deposits of the pan-Arctic region.
Paleontological Journal, 56 (9), .
(doi:10.1134/S0031030122090052).
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.
Text
Morphology relationships of Arctic Ancyrospora species final with plates and figures
- Accepted Manuscript
More information
Accepted/In Press date: 24 January 2022
Published date: 26 December 2022
Identifiers
Local EPrints ID: 474873
URI: http://eprints.soton.ac.uk/id/eprint/474873
ISSN: 0031-0301
PURE UUID: c5aafd82-8cc5-49e9-91c8-ae07c38f8997
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Date deposited: 06 Mar 2023 17:33
Last modified: 17 Mar 2024 07:38
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Author:
B. Owens
Author:
O.P. Telnova
Author:
Ch. H. Wellman
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