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New stem-sauropodomorph (Dinosauria, Saurischia) from the Triassic of Brazil.
Naturwissenschaften. 2011 Dec; 98(12):1035-40.N

Abstract

Post-Triassic theropod, sauropodomorph, and ornithischian dinosaurs are readily recognized based on the set of traits that typically characterize each of these groups. On the contrary, most of the early members of those lineages lack such specializations, but share a range of generalized traits also seen in more basal dinosauromorphs. Here, we report on a new Late Triassic dinosaur from the Santa Maria Formation of Rio Grande do Sul, southern Brazil. The specimen comprises the disarticulated partial skeleton of a single individual, including most of the skull bones. Based on four phylogenetic analyses, the new dinosaur fits consistently on the sauropodomorph stem, but lacks several typical features of sauropodomorphs, showing dinosaur plesiomorphies together with some neotheropod traits. This is not an exception among basal dinosaurs, the early radiation of which is characterized by a mosaic pattern of character acquisition, resulting in the uncertain phylogenetic placement of various early members of the group.

Authors+Show Affiliations

Museu de Ciências Naturais, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha 8001, 92425-900, Canoas, Rio Grande do Sul, Brazil.No affiliation info availableNo affiliation info availableNo 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

22083251

Citation

Cabreira, Sergio F., et al. "New Stem-sauropodomorph (Dinosauria, Saurischia) From the Triassic of Brazil." Die Naturwissenschaften, vol. 98, no. 12, 2011, pp. 1035-40.
Cabreira SF, Schultz CL, Bittencourt JS, et al. New stem-sauropodomorph (Dinosauria, Saurischia) from the Triassic of Brazil. Naturwissenschaften. 2011;98(12):1035-40.
Cabreira, S. F., Schultz, C. L., Bittencourt, J. S., Soares, M. B., Fortier, D. C., Silva, L. R., & Langer, M. C. (2011). New stem-sauropodomorph (Dinosauria, Saurischia) from the Triassic of Brazil. Die Naturwissenschaften, 98(12), 1035-40. https://doi.org/10.1007/s00114-011-0858-0
Cabreira SF, et al. New Stem-sauropodomorph (Dinosauria, Saurischia) From the Triassic of Brazil. Naturwissenschaften. 2011;98(12):1035-40. PubMed PMID: 22083251.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - New stem-sauropodomorph (Dinosauria, Saurischia) from the Triassic of Brazil. AU - Cabreira,Sergio F, AU - Schultz,Cesar L, AU - Bittencourt,Jonathas S, AU - Soares,Marina B, AU - Fortier,Daniel C, AU - Silva,Lúcio R, AU - Langer,Max C, Y1 - 2011/11/15/ PY - 2011/08/22/received PY - 2011/10/13/accepted PY - 2011/10/07/revised PY - 2011/11/16/entrez PY - 2011/11/16/pubmed PY - 2012/4/3/medline SP - 1035 EP - 40 JF - Die Naturwissenschaften JO - Naturwissenschaften VL - 98 IS - 12 N2 - Post-Triassic theropod, sauropodomorph, and ornithischian dinosaurs are readily recognized based on the set of traits that typically characterize each of these groups. On the contrary, most of the early members of those lineages lack such specializations, but share a range of generalized traits also seen in more basal dinosauromorphs. Here, we report on a new Late Triassic dinosaur from the Santa Maria Formation of Rio Grande do Sul, southern Brazil. The specimen comprises the disarticulated partial skeleton of a single individual, including most of the skull bones. Based on four phylogenetic analyses, the new dinosaur fits consistently on the sauropodomorph stem, but lacks several typical features of sauropodomorphs, showing dinosaur plesiomorphies together with some neotheropod traits. This is not an exception among basal dinosaurs, the early radiation of which is characterized by a mosaic pattern of character acquisition, resulting in the uncertain phylogenetic placement of various early members of the group. SN - 1432-1904 UR - https://www.unboundmedicine.com/medline/citation/22083251/New_stem_sauropodomorph__Dinosauria_Saurischia__from_the_Triassic_of_Brazil_ L2 - https://dx.doi.org/10.1007/s00114-011-0858-0 DB - PRIME DP - Unbound Medicine ER -