dc.creator | O'gorman, Jose Patricio | |
dc.creator | Coria, Rodolfo Anibal | |
dc.date.accessioned | 2019-07-02T00:27:51Z | |
dc.date.accessioned | 2022-10-14T21:58:38Z | |
dc.date.available | 2019-07-02T00:27:51Z | |
dc.date.available | 2022-10-14T21:58:38Z | |
dc.date.created | 2019-07-02T00:27:51Z | |
dc.date.issued | 2017-04-21 | |
dc.identifier | O'gorman, Jose Patricio; Coria, Rodolfo Anibal; A new elasmosaurid specimen from the upper Maastrichtian of Antarctica: new evidence of a monophyletic group of Weddellian elasmosaurids; Taylor & Francis; Alcheringa; 41; 2; 21-4-2017; 240-249 | |
dc.identifier | 0311-5518 | |
dc.identifier | http://hdl.handle.net/11336/79006 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4311331 | |
dc.description.abstract | A new fossil elasmosaurid specimen, MLP 15-I-7-48, from the upper Maastrichtian Sandwich Bluff Member of the López de Bertodano Formation, Vega Island, Archipelago James Ross, Antarctica, is described. The fossil is a well-preserved anterior limb, which shares with Vegasaurus molyi from the upper Maastrichtian of Antarctica, a concave to flat anterior margin of the humeral shaft, and with Vegasaurus molyi and Aphrosaurus furlongi from the upper Maastrichtian of California, a well-defined depression on the anterior margin of the ventral surface of the humeral shaft. A phylogenetic analysis recovered MLP 15-I-7–48 as sister group of the lower Maastrichtian Vegasaurus molyi within a new clade nominated as Weddellonectia: Kawanectes lafquenianum ((Vegasaurus molyi; MLP 15-I-7–48) (Morenosaurus stocki (Aristonectinae))). This indicates that the previously proposed faunal turnover between the early and late Maastrichtian Weddellian marine reptile fauna, did not severely affect the non-aristonectine elasmosaurids. Additionally, other taxa previously considered evidence of a faunal turnover are re-evaluated. | |
dc.language | eng | |
dc.publisher | Taylor & Francis | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/03115518.2016.1224318 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/03115518.2016.1224318 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | ANTARCTICA | |
dc.subject | ARISTONECTINAE | |
dc.subject | ELASMOSAURIDAE | |
dc.subject | WEDDELLIAN BIOGEOGRAPHIC PROVINCE | |
dc.title | A new elasmosaurid specimen from the upper Maastrichtian of Antarctica: new evidence of a monophyletic group of Weddellian elasmosaurids | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |