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Anatomy of the dinosaur Pampadromaeus barberenai (Saurischia-Sauropodomorpha) from the Late Triassic Santa Maria Formation of southern Brazil.
PLoS One. 2019; 14(2):e0212543.Plos

Abstract

Sauropodomorphs are the most abundant and diverse clade of Triassic dinosaurs, but the taxonomy of their earliest (Carnian) representatives is still poorly understood. One such taxon is Pampadromaeus barberenai, represented by a nearly complete disarticulated skeleton recovered from the upper part of the Santa Maria Formation of Rio Grande do Sul, Brazil. Here, the osteology of Pam. barberenai is fully described for the first time. Detailed comparisons with other Carnian sauropodomorphs reveal a unique anatomy, corroborating its status as a valid species. Potential autapomorphies of Pam. barberenai can be seen in the articulation of the sacral zygapophyses, the length of the pectoral epipodium, the shape of the distal articulation of the femur and the proximal articulation of metatarsal 1. A novel phylogenetic study shows that relationships among the Carnian sauropodomorphs are poorly constrained, possibly because they belong to a "zone of variability", where homoplasy abounds. Yet, there is some evidence that Pam. barberenai may nest within Saturnaliidae, along with Saturnalia tupiniquim and Chromogisaurus novasi, which represents the sister group to the larger sauropodomorphs, i.e. Bagualosauria.

Authors+Show Affiliations

Laboratório de Paleontologia, FFCLRP, Universidade de São Paulo, Ribeirão Preto-SP, Brazil.Laboratório de Paleontologia, FFCLRP, Universidade de São Paulo, Ribeirão Preto-SP, Brazil.Laboratório de Paleontologia, FFCLRP, Universidade de São Paulo, Ribeirão Preto-SP, Brazil.Museu de Ciências Naturais, Universidade Luterana do Brasil, Canoas-RS, Brazil.Museu de Ciências Naturais, Universidade Luterana do Brasil, Canoas-RS, Brazil.

Pub Type(s)

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

Language

eng

PubMed ID

30785940

Citation

Langer, Max Cardoso, et al. "Anatomy of the Dinosaur Pampadromaeus Barberenai (Saurischia-Sauropodomorpha) From the Late Triassic Santa Maria Formation of Southern Brazil." PloS One, vol. 14, no. 2, 2019, pp. e0212543.
Langer MC, McPhee BW, Marsola JCA, et al. Anatomy of the dinosaur Pampadromaeus barberenai (Saurischia-Sauropodomorpha) from the Late Triassic Santa Maria Formation of southern Brazil. PLoS One. 2019;14(2):e0212543.
Langer, M. C., McPhee, B. W., Marsola, J. C. A., Roberto-da-Silva, L., & Cabreira, S. F. (2019). Anatomy of the dinosaur Pampadromaeus barberenai (Saurischia-Sauropodomorpha) from the Late Triassic Santa Maria Formation of southern Brazil. PloS One, 14(2), e0212543. https://doi.org/10.1371/journal.pone.0212543
Langer MC, et al. Anatomy of the Dinosaur Pampadromaeus Barberenai (Saurischia-Sauropodomorpha) From the Late Triassic Santa Maria Formation of Southern Brazil. PLoS One. 2019;14(2):e0212543. PubMed PMID: 30785940.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Anatomy of the dinosaur Pampadromaeus barberenai (Saurischia-Sauropodomorpha) from the Late Triassic Santa Maria Formation of southern Brazil. AU - Langer,Max Cardoso, AU - McPhee,Blair Wayne, AU - Marsola,Júlio César de Almeida, AU - Roberto-da-Silva,Lúcio, AU - Cabreira,Sérgio Furtado, Y1 - 2019/02/20/ PY - 2018/09/24/received PY - 2019/02/05/accepted PY - 2019/2/21/entrez PY - 2019/2/21/pubmed PY - 2019/11/26/medline SP - e0212543 EP - e0212543 JF - PloS one JO - PLoS One VL - 14 IS - 2 N2 - Sauropodomorphs are the most abundant and diverse clade of Triassic dinosaurs, but the taxonomy of their earliest (Carnian) representatives is still poorly understood. One such taxon is Pampadromaeus barberenai, represented by a nearly complete disarticulated skeleton recovered from the upper part of the Santa Maria Formation of Rio Grande do Sul, Brazil. Here, the osteology of Pam. barberenai is fully described for the first time. Detailed comparisons with other Carnian sauropodomorphs reveal a unique anatomy, corroborating its status as a valid species. Potential autapomorphies of Pam. barberenai can be seen in the articulation of the sacral zygapophyses, the length of the pectoral epipodium, the shape of the distal articulation of the femur and the proximal articulation of metatarsal 1. A novel phylogenetic study shows that relationships among the Carnian sauropodomorphs are poorly constrained, possibly because they belong to a "zone of variability", where homoplasy abounds. Yet, there is some evidence that Pam. barberenai may nest within Saturnaliidae, along with Saturnalia tupiniquim and Chromogisaurus novasi, which represents the sister group to the larger sauropodomorphs, i.e. Bagualosauria. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/30785940/Anatomy_of_the_dinosaur_Pampadromaeus_barberenai__Saurischia_Sauropodomorpha__from_the_Late_Triassic_Santa_Maria_Formation_of_southern_Brazil_ L2 - https://dx.plos.org/10.1371/journal.pone.0212543 DB - PRIME DP - Unbound Medicine ER -