A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica
ABSTRACTWe describe a new capitosauroid temnospondyl, Antarctosuchus polyodon , gen. et sp. nov., on the basis of a large and relatively complete skull from the upper Fremouw Formation of Antarctica. The new species is characterized by its possession of numerous, extremely small maxillary, palatine,...
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ftdatacite:10.6084/m9.figshare.1017000.v1 2023-05-15T13:36:48+02:00 A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica Sidor, Christian A. J. SéBastien Steyer Hammer, William R. 2014 https://dx.doi.org/10.6084/m9.figshare.1017000.v1 https://tandf.figshare.com/articles/dataset/A_new_capitosauroid_temnospondyl_from_the_Middle_Triassic_upper_Fremouw_Formation_of_Antarctica/1017000/1 unknown Taylor & Francis https://dx.doi.org/10.1080/02724634.2013.808205 https://dx.doi.org/10.6084/m9.figshare.1017000 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Uncategorised dataset Dataset 2014 ftdatacite https://doi.org/10.6084/m9.figshare.1017000.v1 https://doi.org/10.1080/02724634.2013.808205 https://doi.org/10.6084/m9.figshare.1017000 2021-11-05T12:55:41Z ABSTRACTWe describe a new capitosauroid temnospondyl, Antarctosuchus polyodon , gen. et sp. nov., on the basis of a large and relatively complete skull from the upper Fremouw Formation of Antarctica. The new species is characterized by its possession of numerous, extremely small maxillary, palatine, and ectopterygoid teeth, a dental pattern that suggests specialization on small prey items, possibly invertebrates. The taxon is also characterized by a parachoanal tooth row that extends far posterior to the choana and occipital condyles set close to the midline. A combination of features, including a flat skull and low occiput together with well-developed sensory canals, suggests an aquatic lifestyle. We address the phylogenetic relationships of Antarctosuchus by adding it to a recent cladistic analysis of Capitosauria. The revised data set includes 27 taxa and 53 characters. The results of this analysis place Antarctosuchus within a clade of derived Triassic stereospondyls as the sister taxon to Paracyclotosaurus crookshanki from the Triassic Denwai Formation of India. To date, the upper Fremouw Formation has yielded two endemic temnospondyl species (viz., Kryostega collinsoni and Antarctosuchus polyodon ), although indeterminate remains referred to benthosuchids and a cranial fragment assigned to Parotosuchus sp. have also been noted. In contrast to the broadly distributed therapsid taxa recognized from the Middle Triassic of Antarctica (e.g., Cynognathus , Diademodon ), the temnospondyl fauna suggests more limited interchange with other coeval southern Pangean basins (e.g., Karoo, Luangwa, Ruhuhu, Waterberg).SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at http://www.tandfonline.com/UJVP. Dataset Antarc* Antarctica DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Uncategorised |
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Uncategorised Sidor, Christian A. J. SéBastien Steyer Hammer, William R. A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica |
topic_facet |
Uncategorised |
description |
ABSTRACTWe describe a new capitosauroid temnospondyl, Antarctosuchus polyodon , gen. et sp. nov., on the basis of a large and relatively complete skull from the upper Fremouw Formation of Antarctica. The new species is characterized by its possession of numerous, extremely small maxillary, palatine, and ectopterygoid teeth, a dental pattern that suggests specialization on small prey items, possibly invertebrates. The taxon is also characterized by a parachoanal tooth row that extends far posterior to the choana and occipital condyles set close to the midline. A combination of features, including a flat skull and low occiput together with well-developed sensory canals, suggests an aquatic lifestyle. We address the phylogenetic relationships of Antarctosuchus by adding it to a recent cladistic analysis of Capitosauria. The revised data set includes 27 taxa and 53 characters. The results of this analysis place Antarctosuchus within a clade of derived Triassic stereospondyls as the sister taxon to Paracyclotosaurus crookshanki from the Triassic Denwai Formation of India. To date, the upper Fremouw Formation has yielded two endemic temnospondyl species (viz., Kryostega collinsoni and Antarctosuchus polyodon ), although indeterminate remains referred to benthosuchids and a cranial fragment assigned to Parotosuchus sp. have also been noted. In contrast to the broadly distributed therapsid taxa recognized from the Middle Triassic of Antarctica (e.g., Cynognathus , Diademodon ), the temnospondyl fauna suggests more limited interchange with other coeval southern Pangean basins (e.g., Karoo, Luangwa, Ruhuhu, Waterberg).SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at http://www.tandfonline.com/UJVP. |
format |
Dataset |
author |
Sidor, Christian A. J. SéBastien Steyer Hammer, William R. |
author_facet |
Sidor, Christian A. J. SéBastien Steyer Hammer, William R. |
author_sort |
Sidor, Christian A. |
title |
A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica |
title_short |
A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica |
title_full |
A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica |
title_fullStr |
A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica |
title_full_unstemmed |
A new capitosauroid temnospondyl from the Middle Triassic upper Fremouw Formation of Antarctica |
title_sort |
new capitosauroid temnospondyl from the middle triassic upper fremouw formation of antarctica |
publisher |
Taylor & Francis |
publishDate |
2014 |
url |
https://dx.doi.org/10.6084/m9.figshare.1017000.v1 https://tandf.figshare.com/articles/dataset/A_new_capitosauroid_temnospondyl_from_the_Middle_Triassic_upper_Fremouw_Formation_of_Antarctica/1017000/1 |
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Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://dx.doi.org/10.1080/02724634.2013.808205 https://dx.doi.org/10.6084/m9.figshare.1017000 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.1017000.v1 https://doi.org/10.1080/02724634.2013.808205 https://doi.org/10.6084/m9.figshare.1017000 |
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