Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland
Abstract: Two morphologically distinct assemblages of the Late Devonian tetrapod Ichthyostega from East Greenland are described on the basis of a large collection of skulls and postcranial elements. Skull specimens collected on Gauss Halvø show that the assemblage from the lower Aina Dal Formation h...
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crwiley:10.1111/j.1475-4983.2004.00435.x 2024-06-02T08:05:55+00:00 Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland BLOM, H. 2005 http://dx.doi.org/10.1111/j.1475-4983.2004.00435.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1475-4983.2004.00435.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1475-4983.2004.00435.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Palaeontology volume 48, issue 1, page 111-134 ISSN 0031-0239 1475-4983 journal-article 2005 crwiley https://doi.org/10.1111/j.1475-4983.2004.00435.x 2024-05-03T11:09:11Z Abstract: Two morphologically distinct assemblages of the Late Devonian tetrapod Ichthyostega from East Greenland are described on the basis of a large collection of skulls and postcranial elements. Skull specimens collected on Gauss Halvø show that the assemblage from the lower Aina Dal Formation has proportionally narrower skulls and finer skull roof sculpture than the assemblage from the higher Britta Dal Formation. The assemblages are compared with the stratigraphically unconstrained type material from the north side of Celsius Bjerg on Ymer Ø, allowing a taxonomic revision. From the original description of seven taxa, three species are recognized and related to the assemblages from Gauss Halvø. I. stensioei is comparable with the Aina Dal Formation assemblage while I. eigili and I. watsoni are valid for specimens found in the Britta Dal Formation. Ichthyostegopsis wimani is not a valid genus or species and may be regarded as a juvenile I. eigili . This example of species‐level variability is the earliest known from the fossil record of early tetrapods. Article in Journal/Newspaper East Greenland Gauss halvø Greenland Wiley Online Library Aina Dal ENVELOPE(-23.183,-23.183,73.400,73.400) Britta Dal ENVELOPE(-23.267,-23.267,73.417,73.417) Celsius Bjerg ENVELOPE(-23.250,-23.250,73.117,73.117) Gauss Halvø ENVELOPE(-23.167,-23.167,73.500,73.500) Greenland Ymer Ø ENVELOPE(-24.333,-24.333,73.150,73.150) Palaeontology 48 1 111 134 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract: Two morphologically distinct assemblages of the Late Devonian tetrapod Ichthyostega from East Greenland are described on the basis of a large collection of skulls and postcranial elements. Skull specimens collected on Gauss Halvø show that the assemblage from the lower Aina Dal Formation has proportionally narrower skulls and finer skull roof sculpture than the assemblage from the higher Britta Dal Formation. The assemblages are compared with the stratigraphically unconstrained type material from the north side of Celsius Bjerg on Ymer Ø, allowing a taxonomic revision. From the original description of seven taxa, three species are recognized and related to the assemblages from Gauss Halvø. I. stensioei is comparable with the Aina Dal Formation assemblage while I. eigili and I. watsoni are valid for specimens found in the Britta Dal Formation. Ichthyostegopsis wimani is not a valid genus or species and may be regarded as a juvenile I. eigili . This example of species‐level variability is the earliest known from the fossil record of early tetrapods. |
format |
Article in Journal/Newspaper |
author |
BLOM, H. |
spellingShingle |
BLOM, H. Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland |
author_facet |
BLOM, H. |
author_sort |
BLOM, H. |
title |
Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland |
title_short |
Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland |
title_full |
Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland |
title_fullStr |
Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland |
title_full_unstemmed |
Taxonomic revision of the Late Devonian tetrapod Ichthyostega from East Greenland |
title_sort |
taxonomic revision of the late devonian tetrapod ichthyostega from east greenland |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.1475-4983.2004.00435.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1475-4983.2004.00435.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1475-4983.2004.00435.x |
long_lat |
ENVELOPE(-23.183,-23.183,73.400,73.400) ENVELOPE(-23.267,-23.267,73.417,73.417) ENVELOPE(-23.250,-23.250,73.117,73.117) ENVELOPE(-23.167,-23.167,73.500,73.500) ENVELOPE(-24.333,-24.333,73.150,73.150) |
geographic |
Aina Dal Britta Dal Celsius Bjerg Gauss Halvø Greenland Ymer Ø |
geographic_facet |
Aina Dal Britta Dal Celsius Bjerg Gauss Halvø Greenland Ymer Ø |
genre |
East Greenland Gauss halvø Greenland |
genre_facet |
East Greenland Gauss halvø Greenland |
op_source |
Palaeontology volume 48, issue 1, page 111-134 ISSN 0031-0239 1475-4983 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1475-4983.2004.00435.x |
container_title |
Palaeontology |
container_volume |
48 |
container_issue |
1 |
container_start_page |
111 |
op_container_end_page |
134 |
_version_ |
1800750798249918464 |