Vertebrate fossils from the Adamantina Formation (Late Cretaceous), Prata paleontological district, Minas Gerais State, Brazil

Candeiro, Carlos Roberto dos Anjos; Santos, Adriano Rodrigues dos; Rich, Thomas H.; Marinho, Thiago da Silva; Oliveira, Emerson Cruz de

doi:10.1016/j.geobios.2005.10.003

Cited by 32 publications

(14 citation statements)

References 9 publications

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“…The first records of Aeolosaurus outside of Patagonia were published by Santucci and Bertini (2001, see also the abstracts of Bertini et al, 1999aBertini et al, ,b, 2000, based on material from the Bauru Group, southeastern Brazil. This, and other sparse records of the genus Lopes and Buchmann, 2008), were used as paleobiogeographic and biostratigraphic indicators (e.g., Santucci and Bertini, 2001;Candeiro, 2006Candeiro, , 2010Candeiro et al, 2006). In our view, the fragmentary and isolated nature of most studied materials and the still sparse knowledge of the diversity and phylogenetic relationships of Brazilian titanosaurs generate uncertainty in the taxonomy of the specimens with these characteristics.…”

Section: History Of the Genus Aeolosaurusmentioning

confidence: 99%

“…The first five taxa come from the Bauru Group and the latter from the Sanfranciscana Basin. In addition to these valid species, there are taxa that have been shown to be nomina dubia, such as Antarctosaurus brasiliensis (Arid and Vizotto, 1971;Kellner and Campos, 2000;Upchurch et al, 2004), taxa whose validity remains to be demonstrated, such as the Brazilian records of the Patagonian genus Aeolosaurus (Bertini et al, 1999(Bertini et al, , 2000Santucci and Bertini, 2001;Candeiro et al, 2006;Candeiro, 2010), and many isolated, fragmentary bones and teeth attributed to titanosaurs (e.g., Huene, 1931;Kellner and Campos, 2000;Bertini et al, 2001;Santucci and Bertini, 2001;Almeida et al, 2004;Lopes and Buchmann, 2008;Santucci, 2008;Bittencourt and Langer, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Discussion about the occurrence of the genus Aeolosaurus Powell 1987 (Dinosauria, Titanosauria) in the Upper Cretaceous of Brazil

Martinelli¹,

Riff²,

Lopes³

2011

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The records of Cretaceous Brazilian titanosaurs assigned to the Patagonian genus Aeolosaurus Powell (Dinosauria, Sauropoda, Titanosauria) are discussed. The fragmentary and isolated nature of many of the specimens and the incomplete knowledge of the diversity and phylogenetic relationships of Brazilian titanosaurs generate uncertainty regarding the taxonomic assignments. Revision of the Brazilian specimens attributed to Aeolosaurus suggests that there are no characters indicating the presence of this Patagonian genus in the Late Cretaceous of Brazil. The conclusion that the relationships of these specimens were incorrectly recognized, points out that better taxonomic procedures, using consistent data, such as the presence of well-defi ned apomorphies, are needed for correct taxonomic designations, paleogeographic and paleobiostratigraphic inferences and the proposal of biochrons. RESUMODISCUSSÕES SOBRE A PRESENÇA DO GÊNERO AEOLOSAURUS POWELL 1987 (DINOSAURIA, TITANOSAURIA) NO CRETÁCEO SUPERIOR DO BRASIL. O registro de titanossauros no Cretáceo do Brasil, associado ao gênero patagônico Aeolosaurus Powell (Dinosauria, Sauropoda, Titanosauria), é discutido. A natureza fragmentária e isolada de muitos dos materiais estudados e o conhecimento ainda incipiente da real diversidade e das relações fi logenéticas dos titanossauros brasileiros tem gerado incertezas nas afi nidades taxonômicas propostas. A revisão dos espécimes brasileiros atribuídos a Aeolosaurus sugere que não há caracteres para sustentar a ocorrência deste gênero patagônico no Cretáceo do Brasil. A constatação de que estes materiais isolados e fragmentários foram inadequadamente reconhecidos em suas relações alerta para a necessidade de procedimentos taxonômicos mais adequados. Para tanto, identifi cações bem fundamentadas, por exemplo, na presença de apomorfi as, é indispensável para a correta designação taxonômica, e as consequentes inferências paleobiogeográfi cas, paleobiostratigráfi cas e no estabelecimento de biócronos.

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Section: History Of the Genus Aeolosaurusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Discussion about the occurrence of the genus Aeolosaurus Powell 1987 (Dinosauria, Titanosauria) in the Upper Cretaceous of Brazil

Martinelli¹,

Riff²,

Lopes³

2011

gaea

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“…Fernandes and Coimbra (1996) considered the Adamantina Formation to be the oldest part of the Bauru Group with a Turonian-Santonian age. Candeiro et al (2006) Remarks-There is no doubt that the cranial material of Mariliasuchus amarali represents one of the best preserved remains of heterodont notosuchians (Carvalho and Bertini 1999, Vasconcellos and Carvalho 2005, Zaher et al 2006, Andrade and Bertini 2008b, c, Nobre et al 2008) with complex food processing. Several complete specimens are three-dimensionally preserved with complete dental series showing beautiful wear patterns.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…In Brazil, a fragmentary lower jaw with a single premolar was found in the Adamantina Formation (Bertini et al 1993, Candeiro et al 2006), a stratigraphic unit that also included Mesungulatum [Pascual and Ortiz-Jaureguizar 2007]). These mammalian forms possess 4 to 6 mm large molars (Bonaparte 1996, Chornogubsky 2003, Gurovich 2005 which are comparable to those of the small-to medium-sized, specialized notosuchians.…”

Section: Possible Dietary Niche Partitioning and Overlap Between Notomentioning

confidence: 99%

The evolution of jaw mechanism and dental function in heterodont crocodyliforms

Ősi

2013

Historical Biology

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Heterodont dentition sometimes including multicuspid crowns appeared in numerous fossil forms through all main lineages of the Crocodyliformes. Teeth in these complex dentitions frequently bear wear facets that are exclusive indicators of tooth-tooth occlusion. Besides dental features, specializations of the jaw apparatus, jaw adductors and mandibular movement can be recognized, all reflecting a high variability of jaw mechanism and of intraoral food

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“…Isolated teeth attributed to carcharodontosaurids (Silva & Kellner, 1999;Candeiro et al, 2004Candeiro et al, , 2006b) are currently considered to correspond to abelisaurids (Canale et al, 2009;Souza et al, 2011). However, most recently, new bone remains belonging to carcharodontosaurian theropods have been described (Azevedo et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

New record of abelisauroid theropods from the Bauru Group (Upper Cretaceous), São Paulo State, Brazil

Méndez¹,

Novas²,

Iori³

2014

Rev. bras. paleontol.

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-Isolated bones of abelisauroid theropods from the Bauru Group (Late Cretaceous, Brazil), are described. They correspond to three individuals represented by fused ischia and part of the ilium, a partial axis, and a right fi bula, respectively. The fossils come from different sites in the municipalities of Ibirá (axis and fi bula) and Monte Alto (ilium and ischia), São Paulo State, from Maastrichtian beds of the São José do Rio Preto and the Marília formations (Bauru Group), respectively. The specimens provide new information on abelisauroids which are still poorly known in the Brazilian fossil record, and on the distribution of this diverse group of theropod dinosaurs in South America. These discoveries indicate that abelisauroids were the most common large predatory dinosaurs in the outcrops where they come from.

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Vertebrate fossils from the Adamantina Formation (Late Cretaceous), Prata paleontological district, Minas Gerais State, Brazil

Cited by 32 publications

References 9 publications

Discussion about the occurrence of the genus Aeolosaurus Powell 1987 (Dinosauria, Titanosauria) in the Upper Cretaceous of Brazil

Discussion about the occurrence of the genus Aeolosaurus Powell 1987 (Dinosauria, Titanosauria) in the Upper Cretaceous of Brazil

The evolution of jaw mechanism and dental function in heterodont crocodyliforms

New record of abelisauroid theropods from the Bauru Group (Upper Cretaceous), São Paulo State, Brazil

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