The synonymy of the Late Cretaceous mosasaur (Squamata) genus Lakumasaurus from Antarctica with Taniwhasaurus from New Zealand and its bearing upon faunal similarity within the Weddellian Province
Abstract Novas et al . (2002. Ameghiniana 39:245–249) described and named a new mosasaur as Lakumasaurus antarcticus from the Late Cretaceous marine deposits of the Antarctic Peninsula. The specimen was recovered from the late Campanian Santa Marta Formation on James Ross Island. A number of charact...
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crwiley:10.1002/gj.1066 2024-06-02T07:55:50+00:00 The synonymy of the Late Cretaceous mosasaur (Squamata) genus Lakumasaurus from Antarctica with Taniwhasaurus from New Zealand and its bearing upon faunal similarity within the Weddellian Province Martin, James E. Fernández, Marta 2007 http://dx.doi.org/10.1002/gj.1066 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgj.1066 https://onlinelibrary.wiley.com/doi/pdf/10.1002/gj.1066 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Geological Journal volume 42, issue 2, page 203-211 ISSN 0072-1050 1099-1034 journal-article 2007 crwiley https://doi.org/10.1002/gj.1066 2024-05-03T12:00:45Z Abstract Novas et al . (2002. Ameghiniana 39:245–249) described and named a new mosasaur as Lakumasaurus antarcticus from the Late Cretaceous marine deposits of the Antarctic Peninsula. The specimen was recovered from the late Campanian Santa Marta Formation on James Ross Island. A number of characters indicate the affinities of Lakumasaurus with the Tylosaurinae. However, other characters of Lakumasaurus are unusual among tylosaurines, particularly the dentition bearing fine striae, teeth with non‐serrated anterior carinae, anterior teeth without posterior carinae, relatively straight lateral margins on frontal and relatively small size. Investigation of mosasaurs from New Zealand confirms that these characters occur in the type specimen of Taniwhasaurus oweni Hector 1874, collected from the late Campanian Conway Formation of Haumuri Bluff. Size and similar morphological characters indicate the synonymy of Lakumasaurus with Taniwhasaurus . The synonymy of Lakumasaurus with Taniwhasaurus adds significantly to the evidence of endemism among marine reptiles in Antarctica, New Zealand and Patagonia (Weddellian Province) during the Late Cretaceous. Taniwhasaurus along with the possible co‐occurrence of Moanasaurus are the first mosasaurs at a generic level to indicate Gondwanan endemism. The mosasaur evidence is complemented by the plesiosaur Aristonectes , which occurs in the Maastrichtian of Argentina and Antarctica and appears similar to Kaiwhekea from the Maastrichtian of New Zealand, and by Mauisaurus , an elasmosaurid which occurs in the Maastrichtian of Antarctica and medial Campanian‐Maastrichtian of New Zealand. Copyright © 2007 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica New Zealand antarcticus James Ross Island Ross Island Wiley Online Library Antarctic Antarctic Peninsula Argentina Conway ENVELOPE(-61.422,-61.422,-62.841,-62.841) Hector ENVELOPE(-63.376,-63.376,-64.579,-64.579) New Zealand Patagonia Ross Island The Antarctic Geological Journal 42 2 203 211 |
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English |
description |
Abstract Novas et al . (2002. Ameghiniana 39:245–249) described and named a new mosasaur as Lakumasaurus antarcticus from the Late Cretaceous marine deposits of the Antarctic Peninsula. The specimen was recovered from the late Campanian Santa Marta Formation on James Ross Island. A number of characters indicate the affinities of Lakumasaurus with the Tylosaurinae. However, other characters of Lakumasaurus are unusual among tylosaurines, particularly the dentition bearing fine striae, teeth with non‐serrated anterior carinae, anterior teeth without posterior carinae, relatively straight lateral margins on frontal and relatively small size. Investigation of mosasaurs from New Zealand confirms that these characters occur in the type specimen of Taniwhasaurus oweni Hector 1874, collected from the late Campanian Conway Formation of Haumuri Bluff. Size and similar morphological characters indicate the synonymy of Lakumasaurus with Taniwhasaurus . The synonymy of Lakumasaurus with Taniwhasaurus adds significantly to the evidence of endemism among marine reptiles in Antarctica, New Zealand and Patagonia (Weddellian Province) during the Late Cretaceous. Taniwhasaurus along with the possible co‐occurrence of Moanasaurus are the first mosasaurs at a generic level to indicate Gondwanan endemism. The mosasaur evidence is complemented by the plesiosaur Aristonectes , which occurs in the Maastrichtian of Argentina and Antarctica and appears similar to Kaiwhekea from the Maastrichtian of New Zealand, and by Mauisaurus , an elasmosaurid which occurs in the Maastrichtian of Antarctica and medial Campanian‐Maastrichtian of New Zealand. Copyright © 2007 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Martin, James E. Fernández, Marta |
spellingShingle |
Martin, James E. Fernández, Marta The synonymy of the Late Cretaceous mosasaur (Squamata) genus Lakumasaurus from Antarctica with Taniwhasaurus from New Zealand and its bearing upon faunal similarity within the Weddellian Province |
author_facet |
Martin, James E. Fernández, Marta |
author_sort |
Martin, James E. |
title |
The synonymy of the Late Cretaceous mosasaur (Squamata) genus Lakumasaurus from Antarctica with Taniwhasaurus from New Zealand and its bearing upon faunal similarity within the Weddellian Province |
title_short |
The synonymy of the Late Cretaceous mosasaur (Squamata) genus Lakumasaurus from Antarctica with Taniwhasaurus from New Zealand and its bearing upon faunal similarity within the Weddellian Province |
title_full |
The synonymy of the Late Cretaceous mosasaur (Squamata) genus Lakumasaurus from Antarctica with Taniwhasaurus from New Zealand and its bearing upon faunal similarity within the Weddellian Province |
title_fullStr |
The synonymy of the Late Cretaceous mosasaur (Squamata) genus Lakumasaurus from Antarctica with Taniwhasaurus from New Zealand and its bearing upon faunal similarity within the Weddellian Province |
title_full_unstemmed |
The synonymy of the Late Cretaceous mosasaur (Squamata) genus Lakumasaurus from Antarctica with Taniwhasaurus from New Zealand and its bearing upon faunal similarity within the Weddellian Province |
title_sort |
synonymy of the late cretaceous mosasaur (squamata) genus lakumasaurus from antarctica with taniwhasaurus from new zealand and its bearing upon faunal similarity within the weddellian province |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1002/gj.1066 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgj.1066 https://onlinelibrary.wiley.com/doi/pdf/10.1002/gj.1066 |
long_lat |
ENVELOPE(-61.422,-61.422,-62.841,-62.841) ENVELOPE(-63.376,-63.376,-64.579,-64.579) |
geographic |
Antarctic Antarctic Peninsula Argentina Conway Hector New Zealand Patagonia Ross Island The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Argentina Conway Hector New Zealand Patagonia Ross Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica New Zealand antarcticus James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica New Zealand antarcticus James Ross Island Ross Island |
op_source |
Geological Journal volume 42, issue 2, page 203-211 ISSN 0072-1050 1099-1034 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/gj.1066 |
container_title |
Geological Journal |
container_volume |
42 |
container_issue |
2 |
container_start_page |
203 |
op_container_end_page |
211 |
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1800751508034158592 |