Vertebrate micro-remains from the Upper Devonian of East Greenland with comments on the Frasnian-Famennian boundary
Vertebrate micro-remains from the Upper Devonian of East Greenland with comments on the Frasnian-Famennian boundary
Vertebrate micro-remains of jawless vertebrates (psammosteid heterostracans) and gnathostomes (acanthodians and sarcopterygians) occur in a residue collected from the Late Devonian Kap Graah Group sandstones of East Greenland. Fragmentary and isolated elements of psammosteids are assigned to Psammosteus sp. The acanthodians are represented by scales of acanthodiform type and poorly preserved fin spines. Tooth and scale fragments of sarcopterygians may suggest a porolepiform affinity. This assemblage and the associated macro-vertebrate fauna indicate a Frasnian age for anotherwise assumed Famennian part of the East Greenland succession, and do rather effectively bracket the Frasnian–Famennian boundary.
Upper Devonian, East Greenland, Kap Graah Group, jawless vertebrates, psammosteids, acanthodians, sarcopterygians
39-46
Blom, H.
1068e81f-951d-44ff-9636-ca4374541065
Carlsson, A.
77886467-3363-457a-b6d0-ba2078ca68c3
Marshall, J.E.A.
cba178e3-91aa-49a2-b2ce-4b8d9d870b06
December 2006
Blom, H.
1068e81f-951d-44ff-9636-ca4374541065
Carlsson, A.
77886467-3363-457a-b6d0-ba2078ca68c3
Marshall, J.E.A.
cba178e3-91aa-49a2-b2ce-4b8d9d870b06
Blom, H., Carlsson, A. and Marshall, J.E.A.
(2006)
Vertebrate micro-remains from the Upper Devonian of East Greenland with comments on the Frasnian-Famennian boundary.
Bulletin of the Geological Society of Denmark, 53, .
Abstract
Vertebrate micro-remains of jawless vertebrates (psammosteid heterostracans) and gnathostomes (acanthodians and sarcopterygians) occur in a residue collected from the Late Devonian Kap Graah Group sandstones of East Greenland. Fragmentary and isolated elements of psammosteids are assigned to Psammosteus sp. The acanthodians are represented by scales of acanthodiform type and poorly preserved fin spines. Tooth and scale fragments of sarcopterygians may suggest a porolepiform affinity. This assemblage and the associated macro-vertebrate fauna indicate a Frasnian age for anotherwise assumed Famennian part of the East Greenland succession, and do rather effectively bracket the Frasnian–Famennian boundary.
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Published date: December 2006
Keywords:
Upper Devonian, East Greenland, Kap Graah Group, jawless vertebrates, psammosteids, acanthodians, sarcopterygians
Identifiers
Local EPrints ID: 49667
URI: http://eprints.soton.ac.uk/id/eprint/49667
ISSN: 0011-6297
PURE UUID: e5fadbd5-4668-402c-a887-fd005c4b9a08
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Date deposited: 21 Nov 2007
Last modified: 08 Jan 2022 02:33
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Author:
H. Blom
Author:
A. Carlsson
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