Vegasaurus molyi , gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae
ABSTRACT—A new elasmosaurid, Vegasaurus molyi , gen. et sp. nov., from Vega Island, James Ross Archipelago, Antarctica, is described. The holotype and only specimen of this species (MLP 93-I-5-1) was collected from the lower Maastrichtian Cape Lamb Member of the Snow Hill Island Formation. Vegasauru...
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Taylor & Francis
2015
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.1422121 https://tandf.figshare.com/articles/dataset/_i_Vegasaurus_molyi_i_gen_et_sp_nov_Plesiosauria_Elasmosauridae_from_the_Cape_Lamb_Member_lower_maastrichtian_of_the_Snow_Hill_Island_Formation_Vega_Island_Antarctica_and_remarks_on_Wedellian_Elasmosauridae/1422121 |
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ftdatacite:10.6084/m9.figshare.1422121 2023-05-15T14:01:38+02:00 Vegasaurus molyi , gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae O’Gorman, José P. Salgado, Leonardo Olivero, Eduardo B. Marenssi, Sergio A. 2015 https://dx.doi.org/10.6084/m9.figshare.1422121 https://tandf.figshare.com/articles/dataset/_i_Vegasaurus_molyi_i_gen_et_sp_nov_Plesiosauria_Elasmosauridae_from_the_Cape_Lamb_Member_lower_maastrichtian_of_the_Snow_Hill_Island_Formation_Vega_Island_Antarctica_and_remarks_on_Wedellian_Elasmosauridae/1422121 unknown Taylor & Francis https://dx.doi.org/10.1080/02724634.2014.931285 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Inorganic Chemistry FOS Chemical sciences Developmental Biology Biological Sciences Ecology FOS Biological sciences Earth and Environmental Sciences Evolutionary Biology Physiology dataset Dataset 2015 ftdatacite https://doi.org/10.6084/m9.figshare.1422121 https://doi.org/10.1080/02724634.2014.931285 2021-11-05T12:55:41Z ABSTRACT—A new elasmosaurid, Vegasaurus molyi , gen. et sp. nov., from Vega Island, James Ross Archipelago, Antarctica, is described. The holotype and only specimen of this species (MLP 93-I-5-1) was collected from the lower Maastrichtian Cape Lamb Member of the Snow Hill Island Formation. Vegasaurus molyi is the only Antarctic elasmosaurid and one of only a few Late Cretaceous elasmosaurids from the Southern Hemisphere whose postcranial anatomy is well known. Vegasaurus molyi is distinguished from other elasmosaurids by the following combination of characters: cervical region with 54 vertebrae with elongated centra, dumbbell-shaped articular faces and lateral ridge present in the anterior and middle parts of the neck but absent in the posterior-most cervical vertebrae; scapula with ventral ramus bearing a strong ridge in the anteromedial corner of its dorsal surface; ilium shaft with expanded distal end, divided into two parts forming an angle of 140° opening anteriorly; and humerus with anterior knee and prominent posterior projection with accessory posterior articular facet. Preliminary phylogenetic analysis places V. molyi within a clade that includes the Late Cretaceous Wedellian aristonectine elasmosaurids, Aristonectes and Kaiwhekea . This indicates a close relationship between Aristonectinae and non-Aristonectinae Late Cretaceous Weddellian elasmosaurids and suggests a Weddellian origin for the Aristonectinae.http://zoobank.org/urn:lsid:zoobank.org:pub:1B9D10DA-0373-41B5-BFFF-E7AC25D79BF3SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP Dataset Antarc* Antarctic Antarctica Ross Archipelago Snow Hill Island Vega Island DataCite Metadata Store (German National Library of Science and Technology) Antarctic Cape Lamb ENVELOPE(-57.621,-57.621,-63.909,-63.909) Hill Island ENVELOPE(76.070,76.070,-69.395,-69.395) Ross Archipelago ENVELOPE(167.000,167.000,-77.500,-77.500) Snow Hill ENVELOPE(-57.183,-57.183,-64.466,-64.466) Snow Hill Island ENVELOPE(-57.183,-57.183,-64.466,-64.466) Vega Island ENVELOPE(-57.500,-57.500,-63.833,-63.833) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Inorganic Chemistry FOS Chemical sciences Developmental Biology Biological Sciences Ecology FOS Biological sciences Earth and Environmental Sciences Evolutionary Biology Physiology |
spellingShingle |
Inorganic Chemistry FOS Chemical sciences Developmental Biology Biological Sciences Ecology FOS Biological sciences Earth and Environmental Sciences Evolutionary Biology Physiology O’Gorman, José P. Salgado, Leonardo Olivero, Eduardo B. Marenssi, Sergio A. Vegasaurus molyi , gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae |
topic_facet |
Inorganic Chemistry FOS Chemical sciences Developmental Biology Biological Sciences Ecology FOS Biological sciences Earth and Environmental Sciences Evolutionary Biology Physiology |
description |
ABSTRACT—A new elasmosaurid, Vegasaurus molyi , gen. et sp. nov., from Vega Island, James Ross Archipelago, Antarctica, is described. The holotype and only specimen of this species (MLP 93-I-5-1) was collected from the lower Maastrichtian Cape Lamb Member of the Snow Hill Island Formation. Vegasaurus molyi is the only Antarctic elasmosaurid and one of only a few Late Cretaceous elasmosaurids from the Southern Hemisphere whose postcranial anatomy is well known. Vegasaurus molyi is distinguished from other elasmosaurids by the following combination of characters: cervical region with 54 vertebrae with elongated centra, dumbbell-shaped articular faces and lateral ridge present in the anterior and middle parts of the neck but absent in the posterior-most cervical vertebrae; scapula with ventral ramus bearing a strong ridge in the anteromedial corner of its dorsal surface; ilium shaft with expanded distal end, divided into two parts forming an angle of 140° opening anteriorly; and humerus with anterior knee and prominent posterior projection with accessory posterior articular facet. Preliminary phylogenetic analysis places V. molyi within a clade that includes the Late Cretaceous Wedellian aristonectine elasmosaurids, Aristonectes and Kaiwhekea . This indicates a close relationship between Aristonectinae and non-Aristonectinae Late Cretaceous Weddellian elasmosaurids and suggests a Weddellian origin for the Aristonectinae.http://zoobank.org/urn:lsid:zoobank.org:pub:1B9D10DA-0373-41B5-BFFF-E7AC25D79BF3SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP |
format |
Dataset |
author |
O’Gorman, José P. Salgado, Leonardo Olivero, Eduardo B. Marenssi, Sergio A. |
author_facet |
O’Gorman, José P. Salgado, Leonardo Olivero, Eduardo B. Marenssi, Sergio A. |
author_sort |
O’Gorman, José P. |
title |
Vegasaurus molyi , gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae |
title_short |
Vegasaurus molyi , gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae |
title_full |
Vegasaurus molyi , gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae |
title_fullStr |
Vegasaurus molyi , gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae |
title_full_unstemmed |
Vegasaurus molyi , gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae |
title_sort |
vegasaurus molyi , gen. et sp. nov. (plesiosauria, elasmosauridae), from the cape lamb member (lower maastrichtian) of the snow hill island formation, vega island, antarctica, and remarks on wedellian elasmosauridae |
publisher |
Taylor & Francis |
publishDate |
2015 |
url |
https://dx.doi.org/10.6084/m9.figshare.1422121 https://tandf.figshare.com/articles/dataset/_i_Vegasaurus_molyi_i_gen_et_sp_nov_Plesiosauria_Elasmosauridae_from_the_Cape_Lamb_Member_lower_maastrichtian_of_the_Snow_Hill_Island_Formation_Vega_Island_Antarctica_and_remarks_on_Wedellian_Elasmosauridae/1422121 |
long_lat |
ENVELOPE(-57.621,-57.621,-63.909,-63.909) ENVELOPE(76.070,76.070,-69.395,-69.395) ENVELOPE(167.000,167.000,-77.500,-77.500) ENVELOPE(-57.183,-57.183,-64.466,-64.466) ENVELOPE(-57.183,-57.183,-64.466,-64.466) ENVELOPE(-57.500,-57.500,-63.833,-63.833) |
geographic |
Antarctic Cape Lamb Hill Island Ross Archipelago Snow Hill Snow Hill Island Vega Island |
geographic_facet |
Antarctic Cape Lamb Hill Island Ross Archipelago Snow Hill Snow Hill Island Vega Island |
genre |
Antarc* Antarctic Antarctica Ross Archipelago Snow Hill Island Vega Island |
genre_facet |
Antarc* Antarctic Antarctica Ross Archipelago Snow Hill Island Vega Island |
op_relation |
https://dx.doi.org/10.1080/02724634.2014.931285 |
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.1422121 https://doi.org/10.1080/02724634.2014.931285 |
_version_ |
1766271602403573760 |