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A bizarre Cretaceous theropod dinosaur from Patagonia and the evolution of Gondwanan dromaeosaurids.
Proc Biol Sci. 2009 Mar 22; 276(1659):1101-7.PB

Abstract

Fossils of a predatory dinosaur provide novel information about the evolution of unenlagiines, a poorly known group of dromaeosaurid theropods from Gondwana. The new dinosaur is the largest dromaeosaurid yet discovered in the Southern Hemisphere and depicts bizarre cranial and postcranial features. Its long and low snout bears numerous, small-sized conical teeth, a condition resembling spinosaurid theropods. Its short forearms depart from the characteristically long-armed condition of all dromaeosaurids and their close avian relatives. The new discovery amplifies the range of morphological disparity among unenlagiines, demonstrating that by the end of the Cretaceous this clade included large, short-armed forms alongside crow-sized, long-armed, possibly flying representatives. The new dinosaur is the youngest record of dromaeosaurids from Gondwana and represents a previously unrecognized lineage of large predators in Late Cretaceous dinosaur faunas mainly dominated by abelisaurid theropods.

Authors+Show Affiliations

CONICET, Museo Argentino de Ciencias Naturales Bernardino Rivadavia, Avenida Angel Gallardo 470, Buenos Aires 1405, Argentina. fernovas@yahoo.com.arNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19129109

Citation

Novas, Fernando E., et al. "A Bizarre Cretaceous Theropod Dinosaur From Patagonia and the Evolution of Gondwanan Dromaeosaurids." Proceedings. Biological Sciences, vol. 276, no. 1659, 2009, pp. 1101-7.
Novas FE, Pol D, Canale JI, et al. A bizarre Cretaceous theropod dinosaur from Patagonia and the evolution of Gondwanan dromaeosaurids. Proc Biol Sci. 2009;276(1659):1101-7.
Novas, F. E., Pol, D., Canale, J. I., Porfiri, J. D., & Calvo, J. O. (2009). A bizarre Cretaceous theropod dinosaur from Patagonia and the evolution of Gondwanan dromaeosaurids. Proceedings. Biological Sciences, 276(1659), 1101-7. https://doi.org/10.1098/rspb.2008.1554
Novas FE, et al. A Bizarre Cretaceous Theropod Dinosaur From Patagonia and the Evolution of Gondwanan Dromaeosaurids. Proc Biol Sci. 2009 Mar 22;276(1659):1101-7. PubMed PMID: 19129109.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A bizarre Cretaceous theropod dinosaur from Patagonia and the evolution of Gondwanan dromaeosaurids. AU - Novas,Fernando E, AU - Pol,Diego, AU - Canale,Juan I, AU - Porfiri,Juan D, AU - Calvo,Jorge O, PY - 2009/1/9/entrez PY - 2009/1/9/pubmed PY - 2009/3/25/medline SP - 1101 EP - 7 JF - Proceedings. Biological sciences JO - Proc Biol Sci VL - 276 IS - 1659 N2 - Fossils of a predatory dinosaur provide novel information about the evolution of unenlagiines, a poorly known group of dromaeosaurid theropods from Gondwana. The new dinosaur is the largest dromaeosaurid yet discovered in the Southern Hemisphere and depicts bizarre cranial and postcranial features. Its long and low snout bears numerous, small-sized conical teeth, a condition resembling spinosaurid theropods. Its short forearms depart from the characteristically long-armed condition of all dromaeosaurids and their close avian relatives. The new discovery amplifies the range of morphological disparity among unenlagiines, demonstrating that by the end of the Cretaceous this clade included large, short-armed forms alongside crow-sized, long-armed, possibly flying representatives. The new dinosaur is the youngest record of dromaeosaurids from Gondwana and represents a previously unrecognized lineage of large predators in Late Cretaceous dinosaur faunas mainly dominated by abelisaurid theropods. SN - 0962-8452 UR - https://www.unboundmedicine.com/medline/citation/19129109/A_bizarre_Cretaceous_theropod_dinosaur_from_Patagonia_and_the_evolution_of_Gondwanan_dromaeosaurids_ L2 - https://royalsocietypublishing.org/doi/10.1098/rspb.2008.1554?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -