A new Jurassic pliosaur from Melville Island, Canadian Arctic Archipelago
A partial skeleton of a plesiosaur (Reptilia: Sauropterygia) from the Hiccles Cove Formation (Middle Jurassic: Callovian) of Melville Island, Canadian Arctic Archipelago, is the first marine reptile fossil with well-preserved skull from the Canadian Arctic and represents a new genus and species of R...
Published in: | Canadian Journal of Earth Sciences |
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2008
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crcansciencepubl:10.1139/e08-003 2024-09-09T19:16:52+00:00 A new Jurassic pliosaur from Melville Island, Canadian Arctic Archipelago Sato, Tamaki Wu, Xiao-chun Sues, H.-D. 2008 http://dx.doi.org/10.1139/e08-003 http://www.nrcresearchpress.com/doi/full-xml/10.1139/E08-003 http://www.nrcresearchpress.com/doi/pdf/10.1139/E08-003 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 45, issue 3, page 303-320 ISSN 0008-4077 1480-3313 journal-article 2008 crcansciencepubl https://doi.org/10.1139/e08-003 2024-06-20T04:11:54Z A partial skeleton of a plesiosaur (Reptilia: Sauropterygia) from the Hiccles Cove Formation (Middle Jurassic: Callovian) of Melville Island, Canadian Arctic Archipelago, is the first marine reptile fossil with well-preserved skull from the Canadian Arctic and represents a new genus and species of Rhomaleosauridae ( Borealonectes russelli ). The Rhomaleosauridae are a problematic group, and a review of the current status of included taxa is given prior to the description of the Canadian material. The holotype and only known specimen of the new species consists of the skull, anterior cervicals, and right forelimb. The new taxon is characterized by the large prefrontal and the configuration of the postorbital bar in which the postfrontal is excluded from the supratemporal fenestra; these are potentially unique features among rhomaleosaurids. It exhibits a combination of primitive and derived characteristics that are variable among rhomaleosaurids, such as the absence of the dorsomedian foramen and anterior pterygoid vacuity on the palate, and the presence of straight shaft of humerus. The occurrence of this specimen suggests a global distribution of rhomaleosaurids, and it is also significant as one of the few Jurassic plesiosaurs known from North America. Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Melville Island Canadian Science Publishing Arctic Canadian Arctic Archipelago Hiccles Cove ENVELOPE(-117.923,-117.923,76.585,76.585) Canadian Journal of Earth Sciences 45 3 303 320 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
A partial skeleton of a plesiosaur (Reptilia: Sauropterygia) from the Hiccles Cove Formation (Middle Jurassic: Callovian) of Melville Island, Canadian Arctic Archipelago, is the first marine reptile fossil with well-preserved skull from the Canadian Arctic and represents a new genus and species of Rhomaleosauridae ( Borealonectes russelli ). The Rhomaleosauridae are a problematic group, and a review of the current status of included taxa is given prior to the description of the Canadian material. The holotype and only known specimen of the new species consists of the skull, anterior cervicals, and right forelimb. The new taxon is characterized by the large prefrontal and the configuration of the postorbital bar in which the postfrontal is excluded from the supratemporal fenestra; these are potentially unique features among rhomaleosaurids. It exhibits a combination of primitive and derived characteristics that are variable among rhomaleosaurids, such as the absence of the dorsomedian foramen and anterior pterygoid vacuity on the palate, and the presence of straight shaft of humerus. The occurrence of this specimen suggests a global distribution of rhomaleosaurids, and it is also significant as one of the few Jurassic plesiosaurs known from North America. |
author2 |
Sues, H.-D. |
format |
Article in Journal/Newspaper |
author |
Sato, Tamaki Wu, Xiao-chun |
spellingShingle |
Sato, Tamaki Wu, Xiao-chun A new Jurassic pliosaur from Melville Island, Canadian Arctic Archipelago |
author_facet |
Sato, Tamaki Wu, Xiao-chun |
author_sort |
Sato, Tamaki |
title |
A new Jurassic pliosaur from Melville Island, Canadian Arctic Archipelago |
title_short |
A new Jurassic pliosaur from Melville Island, Canadian Arctic Archipelago |
title_full |
A new Jurassic pliosaur from Melville Island, Canadian Arctic Archipelago |
title_fullStr |
A new Jurassic pliosaur from Melville Island, Canadian Arctic Archipelago |
title_full_unstemmed |
A new Jurassic pliosaur from Melville Island, Canadian Arctic Archipelago |
title_sort |
new jurassic pliosaur from melville island, canadian arctic archipelago |
publisher |
Canadian Science Publishing |
publishDate |
2008 |
url |
http://dx.doi.org/10.1139/e08-003 http://www.nrcresearchpress.com/doi/full-xml/10.1139/E08-003 http://www.nrcresearchpress.com/doi/pdf/10.1139/E08-003 |
long_lat |
ENVELOPE(-117.923,-117.923,76.585,76.585) |
geographic |
Arctic Canadian Arctic Archipelago Hiccles Cove |
geographic_facet |
Arctic Canadian Arctic Archipelago Hiccles Cove |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Melville Island |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Melville Island |
op_source |
Canadian Journal of Earth Sciences volume 45, issue 3, page 303-320 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e08-003 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
45 |
container_issue |
3 |
container_start_page |
303 |
op_container_end_page |
320 |
_version_ |
1809757033004531712 |