A new Pissarrachampsinae specimen from the Bauru Basin, Brazil, adds data to the understanding of the Baurusuchidae (Mesoeucrocodylia, Notosuchia) distribution in the Late Cretaceous of South America

Darlim, Gustavo; Carvalho, Ismar de Souza; Tavares, Sandra Aparecida Simionato; Langer, Max C.

doi:10.1016/j.cretres.2021.104969

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…Black is the unknown condition. Occurrences and phylogenetic relationships are from Cotts et al ( 2017 ); Darlim et al ( 2021 ); Godoy et al ( 2014 ); Gomani ( 1997 ); Hill ( 2010 ); Iori et al ( 2016 ); Leardi et al ( 2015 ); Marchetti et al ( 2022 ); Marinho et al ( 2006 ); Martin ( 2016 ); Martinelli et al ( 2018 ); Montefeltro ( 2019 ); Nascimento and Zaher ( 2010 ); Nobre and Carvalho ( 2013 ); O'Connor et al ( 2010 ); Ortega et al ( 2000 ); Pol ( 2005 ); Sena et al ( 2022 ); Sereno and Larsson ( 2009 ); Tavares et al ( 2015 ); as well as data from Fossil Work. Iberosuchus osteoderm is hypothetically placed at the base of Sebecidae.…”

Section: Discussionmentioning

confidence: 99%

A survey of osteoderm histology and ornamentation among Crocodylomorpha: A new proxy to infer lifestyle?

Pochat‐Cottilloux

Martin

Amiot

et al. 2022

Journal of Morphology

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Osteoderms of eight extant and extinct species of crocodylomorphs are studied histologically and morphologically. Most osteoderms display the typical “crocodilian” structure with a woven‐fibered matrix surrounded by an upper and a lower parallel fibered matrix. The dorsal ornamentation of those specimens consists of a pit‐and‐ridge structure, with corresponding remodeling mechanisms. However, an osteoderm of Iberosuchus, studied here for the first time, differs in being nearly devoid of ornamentation; moreover, it shows strong bundles of straight Sharpey's fibers perpendicular to the surface in its lateral and dorsal walls, along with a rough plywood‐like structure in its basal plate. This suggests that this osteoderm was more deeply anchored within the dermis than the other osteoderms studied hitherto. This peculiar structure might have been linked to a terrestrial ecology and a specific thermoregulation strategy. Some other notosuchians in our sample do not exhibit ornamentation on their osteoderms, as opposed to neosuchians. Considering current interpretations of osteoderm function(s) in crocodilians, our observations are discussed in reference to possible ecophysiological peculiarities of Notosuchia in general, and Iberosuchus in particular.

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Section: Discussionmentioning

confidence: 99%

A survey of osteoderm histology and ornamentation among Crocodylomorpha: A new proxy to infer lifestyle?

Pochat‐Cottilloux

Martin

Amiot

et al. 2022

Journal of Morphology

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“…albertoi (NASCIMENTO & ZAHER 2010) and Aplestosuchus sordidus (GODOY et al 2014) were each described based on a nearly complete skeleton, whereas Gondwanasuchus scabrosus (MARINHO et al 2013) was described based on a partial skull. More recently, the presence of Campinasuchus dinizi, a taxon first described for the Bauru Basin in Minas Gerais (CARVALHO et al 2011), was also proposed for the General Salgado area (DARLIM et al 2021b). Finally, the last Baurusuchidae species described in São Paulo was Aphaurosuchus escharafacies (DARLIM et al 2021a), based on a complete skeleton from "Fazenda Furnas", in Jales (MONTEFELTRO 2019, MONTEFELTRO et al 2020, DARLIM et al 2021a.…”

Section: Crocodyliformes (Fcm Jvr Jcam and Gmc)mentioning

confidence: 98%

The Bauru Basin in São Paulo and its tetrapods

Langer¹,

Delcourt²,

Montefeltro³

et al. 2022

Derb

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The Bauru Basin bears one of the best sampled tetrapod paleofaunas of Brazil, with about 70% of this diversity collected from its deposits in São Paulo. Its fossils are known since the beginning of the 20th century, coming from all stratigraphic units of the Basin cropping-out in the state, i.e., Santo Anastácio, Araçatuba, Adamantina (alternatively divided into Vale do Rio do Peixe, Presidente Prudente, and São José do Rio Preto formations), and Marília formations. Identified taxa include rare anurans, mammals, and squamates, an important set of testudines, theropods (including birds), and sauropods, in addition to one of the most diverse crocodyliform faunas known worldwide. This congregates more than fifty unique taxonomic entities, including 42 formally described species. Based on biostratigraphic correlations (including tetrapods), on few absolute ages, and other sources of evidence, the Bauru Basin deposits in São Paulo seem to be chronologically restricted to the Late Cretaceous, but further investigation is much needed. Finally, the history of research with such fossils highlights the importance of public funding for research and decentralization of university education for the advancement of science.

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“…A diversity of sauropod and few theropods dinosaurs, squamata, testudines, anurans, fish, and crocodylomorpha somatofossils have already been reported in the sedimentary beds of the Adamantine Formation. Crocodylomorpha is the highest diverse group in this unit, with about 20 taxa (see Matinelli & Teixeira, 2015, Darlim et al, 2021.…”

Section: Geological Settingmentioning

confidence: 99%

A possible lungfish burrow in the Upper Cretaceous Adamantina Formation (Bauru Basin, Brazil) and its paleoecological and paleoenvironmental significance

Rangel¹,

Francischini²,

Rodrigues³

et al. 2022

Rev. bras. paleontol.

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Vertebrates produce a variety of trace fossils, mostly tracks and trackways, coprolites, and burrows resulting from fossorial and subterranean habits. Burrows, particularly, tend to represent temporary or permanent shelter. Vertebrate burrows are relatively understudied in the Brazilian Mesozoic units, as well as in Cretaceous rocks worldwide. This study aims to analyze a paleoburrow in the Upper Cretaceous Adamantina Formation and to discuss its paleobiological and paleoenvironmental implications. A descriptive study was carried out on the paleoburrow morphology, following aspects such as orientation, architecture, and dimensions, and facies association analysis provided the interpretation of the paleoenvironment in which the tracemaker lived. The origin of the paleoburrow was highlighted, as well as the size of its possible producer, besides inferring the exposure time of the paleoburrow from taphonomic interpretations, which contains allochthonous bone remains. The results suggest long periods of dry conditions, as previously suggested for the much-debated Adamantina Formation, interrupted by flooding events as evidenced by facies analysis and suggested by the lungfish burrow. The possibility of a lungfish record also expands the presence of these animals to Adamantina Formation, even though more data are needed to understand the paleoecology of these formations. Keywords: lungfish, paleoburrow, floodplain, Adamantina Formation.

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A new Pissarrachampsinae specimen from the Bauru Basin, Brazil, adds data to the understanding of the Baurusuchidae (Mesoeucrocodylia, Notosuchia) distribution in the Late Cretaceous of South America

Cited by 5 publications

References 27 publications

A survey of osteoderm histology and ornamentation among Crocodylomorpha: A new proxy to infer lifestyle?

A survey of osteoderm histology and ornamentation among Crocodylomorpha: A new proxy to infer lifestyle?

The Bauru Basin in São Paulo and its tetrapods

A possible lungfish burrow in the Upper Cretaceous Adamantina Formation (Bauru Basin, Brazil) and its paleoecological and paleoenvironmental significance

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