| Full text | |
| 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 Opportunities: | 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 Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 19/10620-2 - Turtle macroevolution: contributions from quantitative, virtual paleontology, and biomechanical analyses |
| Grantee: | Gabriel de Souza Ferreira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |