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Katepensaurus goicoecheai, gen. et sp. nov., a Late Cretaceous rebbachisaurid (Sauropoda, Diplodocoidea) from central Patagonia, Argentina

Ibiricu, LM and Casal, GA and Martínez, RD and Lamanna, MC and Luna, M and Salgado, L (2013) Katepensaurus goicoecheai, gen. et sp. nov., a Late Cretaceous rebbachisaurid (Sauropoda, Diplodocoidea) from central Patagonia, Argentina. Journal of Vertebrate Paleontology, 33 (6). 1351 - 1366. ISSN 0272-4634

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We describe Katepensaurus goicoecheai, gen. et sp. nov., a diplodocoid sauropod dinosaur from the Bajo Barreal Formation (Upper Cretaceous: Cenomanian-Turonian) of south-central Chubut Province, central Patagonia, Argentina. The holotypic specimen is a closely associated partial axial skeleton that includes cervical, dorsal, and caudal vertebrae. The dorsal vertebrae of Katepensaurus exhibit the following distinctive characters that we interpret as autapomorphies: (1) internal lamina divides lateral pneumatic fossa of centrum; (2) vertical ridges or crests present on lateral surface of vertebra, overlying neurocentral junction; (3) pair of laminae in parapophyseal centrodiapophyseal fossa; (4) transverse processes perforated by elliptical fenestrae; and (5) well-defined, rounded fossae on lateral aspect of postzygapophyses. Based on the results of previous phylogenetic analyses, we regard the new taxon as a member of Rebbachisauridae; more specifically, it may pertain to Limaysaurinae, a rebbachisaurid subclade that, to date, is definitively known only from southern South America. As currently understood, the rebbachisaurid fossil record suggests that the clade achieved its greatest taxonomic diversity within a few million years of its extinction during the early Late Cretaceous. © 2013 Copyright Taylor and Francis Group, LLC.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Ibiricu, LM
Casal, GA
Martínez, RD
Lamanna, MC
Luna, M
Salgado, L
Date: 1 November 2013
Date Type: Publication
Journal or Publication Title: Journal of Vertebrate Paleontology
Volume: 33
Number: 6
Page Range: 1351 - 1366
DOI or Unique Handle: 10.1080/02724634.2013.776562
Schools and Programs: Dietrich School of Arts and Sciences > Geology and Planetary Science
Refereed: Yes
ISSN: 0272-4634
Date Deposited: 18 Apr 2014 16:56
Last Modified: 23 Jun 2018 11:56


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