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A new titanosaur sauropod from the Late Cretaceous of Brazil.
Zootaxa. 2013; 3701:301-21.Z

Abstract

A new titanosaur dinosaur, Brasilotitan nemophagus gen. et sp. nov., is described from the Adamantina Formation (Turonian-Santonian, Bauru Basin). The specimen consists of a dentary, cervical and sacral vertebrae, one ungual and remains of the pelvic region, that were collected near Presidente Prudente city, Sdo Paulo State. It shows a mandible with an 'L' shaped morphology, with the symphyseal region of the dentary slightly twisted medially, a feature never recorded before in a titanosaur. Brasilotitan nemophagus can be further separated from other members of this clade by: (1) the dorsal portion of the dentary symphyseal contact is broader anteroposteriorly than the ventral part; (2) the ventral portion of the cervical centrum is arched dorsally; (3) the presence of an anteriorly directed accessory prezygapophyseal articulation surface on the cervical vertebrae; (4) the intraprezygapophyseal laminae of the cervical vertebrae are 'V' shaped in dorsal view; and other features. Although the phylogenetic position of Brasilotitan nemophagus is difficult to establish, the new species is neither a basal nor a derived member of the Titanosauria and, based on the lower jaw morphology, appears to be closely related to Antarctosaurus wichmannianus and Bonitasaura salgadoi. This discovery enriches the titanosaur diversity of Brazil and further provides new anatomical information on the lower jaws of those herbivorous dinosaurs.

Authors+Show Affiliations

Laboratório de Sistemática e Tafonomia de Vertebrados Fósseis, Departamento de Geologia e Paleontologia, Museu Nacional/UFRJ, Rio de Janeiro, Brasil. machado.eb@gmail.comNo 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

26191585

Citation

Machado, Elaine B., et al. "A New Titanosaur Sauropod From the Late Cretaceous of Brazil." Zootaxa, vol. 3701, 2013, pp. 301-21.
Machado EB, Avilla Ldos S, Nava WR, et al. A new titanosaur sauropod from the Late Cretaceous of Brazil. Zootaxa. 2013;3701:301-21.
Machado, E. B., Avilla, L. d. o. s. . S., Nava, W. R., Campos, D. d. e. . A., & Kellner, A. W. (2013). A new titanosaur sauropod from the Late Cretaceous of Brazil. Zootaxa, 3701, 301-21.
Machado EB, et al. A New Titanosaur Sauropod From the Late Cretaceous of Brazil. Zootaxa. 2013;3701:301-21. PubMed PMID: 26191585.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A new titanosaur sauropod from the Late Cretaceous of Brazil. AU - Machado,Elaine B, AU - Avilla,Leonardo Dos S, AU - Nava,William R, AU - Campos,Diogenes De A, AU - Kellner,Alexander W A, PY - 2015/7/21/entrez PY - 2013/1/1/pubmed PY - 2015/8/26/medline SP - 301 EP - 21 JF - Zootaxa JO - Zootaxa VL - 3701 N2 - A new titanosaur dinosaur, Brasilotitan nemophagus gen. et sp. nov., is described from the Adamantina Formation (Turonian-Santonian, Bauru Basin). The specimen consists of a dentary, cervical and sacral vertebrae, one ungual and remains of the pelvic region, that were collected near Presidente Prudente city, Sdo Paulo State. It shows a mandible with an 'L' shaped morphology, with the symphyseal region of the dentary slightly twisted medially, a feature never recorded before in a titanosaur. Brasilotitan nemophagus can be further separated from other members of this clade by: (1) the dorsal portion of the dentary symphyseal contact is broader anteroposteriorly than the ventral part; (2) the ventral portion of the cervical centrum is arched dorsally; (3) the presence of an anteriorly directed accessory prezygapophyseal articulation surface on the cervical vertebrae; (4) the intraprezygapophyseal laminae of the cervical vertebrae are 'V' shaped in dorsal view; and other features. Although the phylogenetic position of Brasilotitan nemophagus is difficult to establish, the new species is neither a basal nor a derived member of the Titanosauria and, based on the lower jaw morphology, appears to be closely related to Antarctosaurus wichmannianus and Bonitasaura salgadoi. This discovery enriches the titanosaur diversity of Brazil and further provides new anatomical information on the lower jaws of those herbivorous dinosaurs. SN - 1175-5326 UR - https://www.unboundmedicine.com/medline/citation/26191585/A_new_titanosaur_sauropod_from_the_Late_Cretaceous_of_Brazil_ DB - PRIME DP - Unbound Medicine ER -
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