Multicusped crocodyliform teeth from the Upper Cretaceous (São José do Rio Preto Formation, Bauru Group) of São Paulo, Brazil

2009 ◽  
Vol 30 (5) ◽  
pp. 1279-1286 ◽  
Author(s):  
Felipe Chinaglia Montefeltro ◽  
Carolina Rettondini Laurini ◽  
Max Cardoso Langer
Keyword(s):  
Upper Cretaceous ◽  
Sao Paulo ◽  
São Paulo ◽  
Bauru Group

Description and phylogenetic relationships of a large-bodied sphagesaurid notosuchian from the Upper Cretaceous Adamantina Formation, Bauru Group, São Paulo, southeastern Brazil

2020 ◽  
Vol 106 ◽  
pp. 104259
Author(s):  
Galuber Oliveira Cunha ◽  
Rodrigo Miloni Santucci ◽  
Marco Brandalise de Andrade ◽  
Carlos Eduardo Maia de Oliveira
Keyword(s):  
Phylogenetic Relationships ◽  
Upper Cretaceous ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Bauru Group

scholarly journals On a new peirosaurid crocodyliform from the Upper Cretaceous, Bauru Group, southeastern Brazil

2011 ◽  
Vol 83 (1) ◽  
pp. 317-327 ◽  
Author(s):  
Diogenes A. Campos ◽  
Gustavo R. Oliveira ◽  
Rodrigo G. Figueiredo ◽  
Douglas Riff ◽  
Sergio A.K. Azevedo ◽  
...  
Keyword(s):  
New Species ◽  
Cross Section ◽  
Upper Cretaceous ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
New Taxon ◽  
São Paulo ◽  
Oval Cross Section ◽  
Bauru Group

A new crocodyliform from the Upper Cretaceous (Campanian-Maastrichtian) Presidente Prudente Formation of the Bauru Group is described based on two almost complete skulls and mandibles. The material comes from the "Tartaruguito" site, situated at an old railroad between the cities of Pirapozinho and Presidente Prudente, state of São Paulo, Brazil. The new species, Pepesuchus deiseae gen. et sp. nov., is classified in the clade Peirosauridae on the basis of three synapomorphies: the presence of five premaxillary teeth, the anterior two premaxillary alveoli nearly confluent, and the oval cross-section of the jugal along the lower temporal bar. The new taxon increases the outstanding crocodyliform diversity of the Bauru Group, particularly of the Peirosauridae, which might turn out to be one of the most representative clades of gondwanan mesoeucrocodylians.

A new sauropod (Macronaria, Titanosauria) from the Adamantina Formation, Bauru Group, Upper Cretaceous of Brazil and the phylogenetic relationships of Aeolosaurini

Zootaxa ◽  
2011 ◽  
Vol 3085 (1) ◽  
pp. 1 ◽  
Author(s):  
RODRIGO M. SANTUCCI ◽  
ANTONIO C. DE ARRUDA-CAMPOS
Keyword(s):  
Phylogenetic Analysis ◽  
Upper Cretaceous ◽  
Distal Portion ◽  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
Articular Process ◽  
São Paulo State ◽  
New Diagnosis ◽  
Bauru Group

Remains of a new titanosaur, Aeolosaurus maximus sp. nov., from the Adamantina Formation (Upper Cretaceous), Bauru Group, São Paulo State of Brazil are described. The new species is represented by a single partially articulated skeleton and is characterized by having a well-developed posterior protuberance below the articular area on the anterior and middle haemal arches and a lateral bulge on the distal portion of the articular process of the mid-posterior haemal arches. It shares with other Aeolosaurus species the presence of prezygapophyses curved downward on anterior caudal vertebrae and haemal arches with double articular facets set in a concave posterodorsal surface. These two characteristics are interpreted here as synapomorphies for the genus Aeolosaurus. The new diagnosis for the genus Aeolosaurus does not support the inclusion of Gondwanatitan within Aeolosaurus as previously proposed by some authors. The phylogenetic analysis recovered the two Aeolosaurus from Argentina as sister groups with A. maximus and Gondwanatitan as progressively more basal taxa (Gondwanatitan (A. maximus (A. rionegrinus, A. colhuehuapensis))). Additionally, according to the results of the phylogenetic analysis performed in this work, the taxa Panamericansaurus, Rinconsaurus, and Maxakalisaurus are also nested within Aeolosaurini, being more basal than Aeolosaurus and Gondwanatitan. On the basis of the stratigraph-ical range of the Aeolosaurus occurrences in Argentina and the age proposals based on microfossils for the Bauru Group, it is assumed a Campanian–Maastrichtian age for the top of the Adamantina Formation for the Monte Alto region in São Paulo State and the bottom of the Marília Formation in Peirópolis, Minas Gerais State—the places where Aeolosaurus remains have been reported in Brazil.

scholarly journals A new squamate lizard from the Upper Cretaceous Adamantina Formation (Bauru Group), São Paulo State, Brazil

2011 ◽  
Vol 83 (1) ◽  
pp. 291-299 ◽  
Author(s):  
William R. Nava ◽  
Agustín G. Martinelli
Keyword(s):  
Fossil Record ◽  
Upper Cretaceous ◽  
Sao Paulo ◽  
New Taxon ◽  
São Paulo ◽  
Paulo State ◽  
Maxillary Tooth ◽  
Nasal Process ◽  
São Paulo State ◽  
Bauru Group

The record of non-mosasaur squamates (Reptilia, Squamata) is sparse in the Cretaceus fossil record of Brazil and include six putative reports, three from the Aptian-Albian of the Araripe Basin (Tijubina pontei Bonfim-Júnior and Marques, Olindalacerta brasiliensis Evans and Yabumoto, and a lizard indet.) and three from the Upper Cretaceous of the Bauru Group (Pristiguana brasiliensis Estes and Price, Anilioidae gen. et sp. indet., and Squamata gen. et sp. indet.). In this contribution, a new genus and species of lizard, Brasiliguana prudentis gen. et sp. nov., is described based on an isolated left maxilla with teeth. The material was discovered in an outcrop of the Upper Cretaceous Adamantina Formation (Bauru Group) located in the proximity of Presidente Prudente Municipality, São Paulo State, Brazil. The new taxon is considered a basal non-Priscagamidae+Acrodonta iguanian based on the presence of a weakly inclined anterior margin of the maxillary nasal process and maxillary tooth shape and tooth implantation similar to that of iguanians rather than of other lizard groups (e.g. teiids). This finding significantly increases the squamate lizard diversity of South America, which is still poorly understood and sparsely represented in the fossil record.

Theropod teeth from the Adamantina Formation (Bauru Group, Upper Cretaceous), Monte Alto, São Paulo, Brazil

2014 ◽  
Vol 50 ◽  
pp. 59-71 ◽  
Author(s):  
Sandra Aparecida Simionato Tavares ◽  
Fresia Ricardi Branco ◽  
Rodrigo Miloni Santucci
Keyword(s):  
Upper Cretaceous ◽  
Sao Paulo ◽  
São Paulo ◽  
Bauru Group

scholarly journals TAPHONOMIC ASPECTS OF VERTEBRATE FOSSILS FROM BAURU GROUP, UPPER CRETACEOUS, BRAZIL

2013 ◽  
Vol 69 ◽  
Author(s):  
Karine Lohmann Azevedo ◽  
Cristina Silveira Vega ◽  
Luiz Alberto Fernandes
Keyword(s):  
Upper Cretaceous ◽  
Bone Structure ◽  
Minas Gerais ◽  
Sao Paulo ◽  
Field Trips ◽  
São Paulo ◽  
Class Iii ◽  
Mato Grosso ◽  
Thin Sections ◽  
Osseous Structure

The Bauru Basin covers an area of about 370.000 km2, occurring in São Paulo, Paraná, Mato Grosso, Mato Grosso do Sul, Minas Gerais and Goiás states in Brazil, and also in the northeast of Paraguay. These upper Cretaceous sequence correspond to a semi-arid to arid climate and is divided in two groups, Bauru and Caiuá. The first one has the major record of fossils, being the focus of the taphonomic study. Field trips to Marília and Monte Alto municipalities (São Paulo State) and also to Uberaba city (Minas Gerais State) were made to check the depositional context and collect fossiliferous material. Vertebrate collections were visited, as the Museu de Paleontologia from Marília and Monte Alto (SP), Museu de Paleontologia da Universidade de São Paulo, as well as Museu dos Dinossauros, Centro de Pesquisas Paleontológicas Llewellyn Ivor Price from Peirópolis (MG). Four biostratinomic classes related to articulated/disarticulated fossils were identified in Vale do Rio Peixe, Uberaba, Marília, São José do Rio Preto and Presidente Prudente formations. Class I represents articulated and almost complete specimens, corresponding mainly to turtles and crocodiles. Class II comprises partially articulated specimens of skull and jaw fossils, or sequences of vertebrae. Classes I and II were recorded in Vale do Rio do Peixe, Marília (Serra da Galga Member) and Presidente Prudente formations. Class III is represented by isolated bones, and Class IV by fragmented bones. These two last classes appear in all units of the basin. For diagenetic analysis, 19 thin sections were made showing that, in general, the bone structure is well preserved, with spatic calcite filling the bone and the presence of the original phosphatic material. Marília Formation, on Echaporã Member, is the most different unit of the basin, being more carbonatic. The study of thin sections, considering the osseous structure and the biostratinomic analysis, match with the paleoenvironmental contextualization.

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