Ruiz, Juan V.
Ferreira, Gabriel S.
Martins, Kawan C.
Queiroz, Marcos V.
Langer, Max C.
Montefeltro, Felipe C.
Número total de Autores: 7
Afiliação do(s) autor(es):
 UNESP, Fac Engn Ilha Solteira, Lab Paleontol & Evolucao Ilha Solteira, Ilha Solteira, SP - Brazil
 UNESP, Inst Biol Letras & Ciencias Exatas, Programa Posgrad Biol Anim, Sao Jose Do Rio Preto, SP - Brazil
 Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Lab Evolucao & Biol Integrat, Ribeirao Preto, SP - Brazil
 Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Lab Paleontol, Ribeirao Preto, SP - Brazil
Número total de Afiliações: 4
Tipo de documento:
JOURNAL OF SYSTEMATIC PALAEONTOLOGY;
FEB 16 2021.
Citações Web of Science:
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)