MACNBR   00242
MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
artículos
Título:
Osteology of the unenlagiid theropod Neuquenraptor argentinus from the Late Cretaceous of Patagonia
Autor/es:
BRISSÓN EGLI F.; FERNANDO E. NOVAS; AGNOLÍN F.; ALEXIS M. ARANCIAGA ROLANDO
Revista:
ACTA PALAEONTOLOGICA POLONICA
Editorial:
INST PALEOBIOLOGII PAN
Referencias:
Lugar: Varsovia; Año: 2017 vol. 62 p. 549 - 549
ISSN:
0567-7920
Resumen:
Neuquenraptor argentinus was described as the first undoubted deinonychosaurian theropod from Gondwana. Theonly known specimen is represented by a fragmentary skeleton, including a nearly complete foot, coming from LateCretaceous beds of Neuquén Province, Patagonia, Argentina. Neuquenraptor was later considered as belonging to theSouthern Hemisphere paravian clade Unenlagiidae, and proposed as a junior synonym of Unenlagia comahuensis. Theaim of the present paper is to include a detailed anatomical description of Neuquenraptor (up to the date only known bya preliminary description). Comparisons with other paravians, especially unenlagiids, resulted in the finding of charactersthat may be considered as diagnostic of Unenlagiidae (e.g., scar-like fourth trochanter of femur, metatarsal II withtongue-shaped process over the caudal surface of metatarsal III, well-developed convex longitudinal plantar crest ofmetatarsal IV). Furthermore, comparisons between Neuquenraptor and Unenlagia are carried out with the aim to evaluatethe possible synonymy between these taxa. These comparisons indicate that at least two similar-sized unenlagiidswere present on the Portezuelo Formation. However, in concordance with previous authors, we are not able to supportnor dismiss the possible synonymy between Unenlagia and Neuquenraptor. Additional findings of unenlagiid fossilsfrom the Portezulo Formation will help to clarify the taxonomic status of these taxa.