An articulated phyllolepid fish (Placodermi) from the Devonian of central Australia: implications for non-marine connections with the Old Red Sandstone continent
A second species of the placoderm genus Placolepis ( Pl. harajica sp. nov.), based on a single articulated specimen from Givetian–Frasnian strata in the MacDonnell Ranges, demonstrates the occurrence of this taxon across the Australian craton. Placolepis (order Phyllolepida) is endemic to east Gondw...
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Language: | English |
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Cambridge University Press (CUP)
2005
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Online Access: | http://dx.doi.org/10.1017/s0016756805000464 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756805000464 |
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crcambridgeupr:10.1017/s0016756805000464 2024-04-28T08:02:40+00:00 An articulated phyllolepid fish (Placodermi) from the Devonian of central Australia: implications for non-marine connections with the Old Red Sandstone continent YOUNG, GAVIN C. 2005 http://dx.doi.org/10.1017/s0016756805000464 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756805000464 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 142, issue 2, page 173-186 ISSN 0016-7568 1469-5081 Geology journal-article 2005 crcambridgeupr https://doi.org/10.1017/s0016756805000464 2024-04-09T06:54:36Z A second species of the placoderm genus Placolepis ( Pl. harajica sp. nov.), based on a single articulated specimen from Givetian–Frasnian strata in the MacDonnell Ranges, demonstrates the occurrence of this taxon across the Australian craton. Placolepis (order Phyllolepida) is endemic to east Gondwana, and other phyllolepids are widespread in the Givetian and younger of Gondwana (Australia, Antarctica, Turkey, Venezuela), but do not occur until Late Devonian (Famennian) time in the Northern Hemisphere (Europe, Russia, Greenland, North America). The disjunct space–time distribution of the Phyllolepida is inconsistent with palaeomagnetic evidence indicating a wide equatorial ocean between Gondwana and Laurussia in Late Devonian time. This new species provides additional evidence supporting a Gondwana origin for the group, and later access to northern landmasses resulting from closure of the ocean between Gondwana and Laurussia and continental connection at or near the Frasnian–Famennian boundary. Article in Journal/Newspaper Antarc* Antarctica Greenland Cambridge University Press Geological Magazine 142 2 173 186 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology |
spellingShingle |
Geology YOUNG, GAVIN C. An articulated phyllolepid fish (Placodermi) from the Devonian of central Australia: implications for non-marine connections with the Old Red Sandstone continent |
topic_facet |
Geology |
description |
A second species of the placoderm genus Placolepis ( Pl. harajica sp. nov.), based on a single articulated specimen from Givetian–Frasnian strata in the MacDonnell Ranges, demonstrates the occurrence of this taxon across the Australian craton. Placolepis (order Phyllolepida) is endemic to east Gondwana, and other phyllolepids are widespread in the Givetian and younger of Gondwana (Australia, Antarctica, Turkey, Venezuela), but do not occur until Late Devonian (Famennian) time in the Northern Hemisphere (Europe, Russia, Greenland, North America). The disjunct space–time distribution of the Phyllolepida is inconsistent with palaeomagnetic evidence indicating a wide equatorial ocean between Gondwana and Laurussia in Late Devonian time. This new species provides additional evidence supporting a Gondwana origin for the group, and later access to northern landmasses resulting from closure of the ocean between Gondwana and Laurussia and continental connection at or near the Frasnian–Famennian boundary. |
format |
Article in Journal/Newspaper |
author |
YOUNG, GAVIN C. |
author_facet |
YOUNG, GAVIN C. |
author_sort |
YOUNG, GAVIN C. |
title |
An articulated phyllolepid fish (Placodermi) from the Devonian of central Australia: implications for non-marine connections with the Old Red Sandstone continent |
title_short |
An articulated phyllolepid fish (Placodermi) from the Devonian of central Australia: implications for non-marine connections with the Old Red Sandstone continent |
title_full |
An articulated phyllolepid fish (Placodermi) from the Devonian of central Australia: implications for non-marine connections with the Old Red Sandstone continent |
title_fullStr |
An articulated phyllolepid fish (Placodermi) from the Devonian of central Australia: implications for non-marine connections with the Old Red Sandstone continent |
title_full_unstemmed |
An articulated phyllolepid fish (Placodermi) from the Devonian of central Australia: implications for non-marine connections with the Old Red Sandstone continent |
title_sort |
articulated phyllolepid fish (placodermi) from the devonian of central australia: implications for non-marine connections with the old red sandstone continent |
publisher |
Cambridge University Press (CUP) |
publishDate |
2005 |
url |
http://dx.doi.org/10.1017/s0016756805000464 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756805000464 |
genre |
Antarc* Antarctica Greenland |
genre_facet |
Antarc* Antarctica Greenland |
op_source |
Geological Magazine volume 142, issue 2, page 173-186 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756805000464 |
container_title |
Geological Magazine |
container_volume |
142 |
container_issue |
2 |
container_start_page |
173 |
op_container_end_page |
186 |
_version_ |
1797573959190839296 |