Identification of the first postcranial skeleton of Aristonectes Cabrera (Plesiosauroidea, Elasmosauridae) from the upper Maastrichtian of the south-eastern Pacific, based on a bivariate graphic analysis
Author
dc.contributor.author
Otero, Rodrigo A.
Author
dc.contributor.author
O’Gorman, José P.
es_CL
Admission date
dc.date.accessioned
2014-02-06T19:32:33Z
Available date
dc.date.available
2014-02-06T19:32:33Z
Publication date
dc.date.issued
2013
Cita de ítem
dc.identifier.citation
Cretaceous Research 41 (2013) 86e89
en_US
Identifier
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doi 10.1016/j.cretres.2012.11.001
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/119765
General note
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Artículo de publicación ISI
en_US
Abstract
dc.description.abstract
Cervical vertebrae of elasmosaurids (Sauropterygia, Plesiosauroidea) have proven to be informative even
at family level. The present paper uses a previously developed methodology based on bivariate graphic
analysis that evaluates the proportion indices of cervical vertebrae in elasmosaurids, which is applied to
a well-preserved postcranial specimen of this group recovered from upper Maastrichtian beds of central
Chile. The plotting of such indices groups the Chilean material with other specimens from the Late
Cretaceous of Argentina and Antarctica, the latter referred to the genus Aristonectes. This result allows us
to identify the first relatively complete individual of the genus based on non-cranial characters. The
identification of the Chilean specimen as Aristonectes sp. provides important new data on the postcranial
skeleton of the genus, that has remained poorly known until now.
Identification of the first postcranial skeleton of Aristonectes Cabrera (Plesiosauroidea, Elasmosauridae) from the upper Maastrichtian of the south-eastern Pacific, based on a bivariate graphic analysis