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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A new species of Caipirasuchus (Notosuchia, Sphagesauridae) from the Late Cretaceous of Brazil and the evolutionary history of Sphagesauria

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Author(s):
Ruiz, Juan V. [1, 2] ; Bronzati, Mario [3] ; Ferreira, Gabriel S. [4] ; Martins, Kawan C. [1, 2] ; Queiroz, Marcos V. [1, 2] ; Langer, Max C. [4] ; Montefeltro, Felipe C. [1]
Total Authors: 7
Affiliation:
[1] UNESP, Fac Engn Ilha Solteira, Lab Paleontol & Evolucao Ilha Solteira, Ilha Solteira, SP - Brazil
[2] UNESP, Inst Biol Letras & Ciencias Exatas, Programa Posgrad Biol Anim, Sao Jose Do Rio Preto, SP - Brazil
[3] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Lab Evolucao & Biol Integrat, Ribeirao Preto, SP - Brazil
[4] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Lab Paleontol, Ribeirao Preto, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF SYSTEMATIC PALAEONTOLOGY; v. 19, n. 4, p. 265-287, FEB 16 2021.
Web of Science Citations: 0
Abstract

Sphagesauridae is a group of notosuchian crocodyliforms from the Late Cretaceous of South America characterized by highly specialized jaws and dentition. Here, we describe a new sphagesaurid from the Santo Anastacio Formation (Caiua Group, Bauru Basin), south-east Brazil. The specimen is composed of a partial palate, neurocranium, mandible and fragmentary teeth. It represents a new species that can be assigned to Caipirasuchus due to the presence of a lateromedially narrow and anteroposteriorly long mandibular symphyseal region, apicobasal ridges on the posterior teeth, a diastema between D5 and D6, and a linear row of large neurovascular foramina on the lateral surface of the dentary. It differs from previously described Caipirasuchus species based on a ventrolaterally inclined surface of the dentaries posterior to the tooth row, a connection between the anteroventral margin of the external mandibular fenestra and the floor of the Meckelian canal, and the anterior process of the angular forming a `V'-shaped suture in its contact with the splenial. The results of a phylogenetic analysis of notosuchians recovered the so-called `advanced notosuchians' in a clade, for which we propose a phylogenetic definition and erect the name Sphagesauria. We also recovered two more inclusive clades encompassing an array of Mesozoic notosuchians, here named Xenodontosuchia, which includes Sphagesauria + Baurusuchia, and Eunotosuchia, including Xenodontosuchia, Uruguaysuchidae and other Cretaceous forms. (AU)

FAPESP's process: 14/03825-3 - The origin and rise of dinosaurs in Gondwana (late Triassic - early Jurassic)
Grantee:Max Cardoso Langer
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/18145-9 - INTEGRATING EVO-DEVO AND PALAEONTOLOGY ON THE STUDY OF THE ORIGIN AND EVOLUTION OF THE TYMPANIC MEMBRANE IN DIAPSIDA
Grantee:Mario Bronzati Filho
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 19/10620-2 - Turtle macroevolution: contributions from quantitative, virtual paleontology, and biomechanical analyses
Grantee:Gabriel de Souza Ferreira
Support type: Scholarships in Brazil - Post-Doctorate