Project 4269: F. L. Agnolín, M. A. Cerroni, A. Scanferla, A. Goswami, A. Paulina-Carabajal, T. Halliday, A. R. Cuff, S. Reuil. 2021. First definitive abelisaurid theropod from the Late Cretaceous of Northwestern Argentina. Journal of Vertebrate Paleontology. 41 (4):null.
Abstract
The fossil record of abelisaurid theropods in South America is mostly limited to Brazil and Argentina. In Argentina, abelisaurids are generally known from Patagonia, where their record is relatively abundant and includes well-known and complete specimens. However, for North-western Argentina, abelisaurids are represented by incomplete and isolated bones and teeth that remain largely unpublished. The aim of this contribution is to report a nearly complete abelisaurid braincase from the Late Cretaceous Los Blanquitos Formation (Campanian), Amblayo Valley, Salta province, Argentina. The specimen shows plesiomorphic features for abelisaurids, including a thin skull roof, absence of skull projections like horns or bulges, and low and narrow parietal eminence that lie at the same level as the sagittal crest. Furthermore, the specimen possesses some autapomorphies that support its status as a new taxon and its small size allows it to be assigned as one of the smallest abelisaurids recorded up to date. The finding of this specimen constitutes the first unequivocal occurrence of an abelisaurid in Northwestern Argentina and brings new evidence concerning the geographic distribution of the clade during Late Cretaceous times in South America.Read the article »
Article DOI: 10.1080/02724634.2021.2002348
Project DOI: 10.7934/P4269, http://dx.doi.org/10.7934/P4269
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MorphoBank Project 4269
MorphoBank Project 4269
- Creation Date:
03 June 2022 - Publication Date:
03 June 2022 - Project views: 3776
Authors' Institutions
- Natural History Museum, London
- University of Birmingham
- University of Liverpool
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Museo Argentino de Ciencias Naturales Bernardino Rivadavia
- Universidad Maimonides
- Museo Paleontológico Bariloche
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