| Full text | |
| Author(s): |
Cidade, Giovanne M.
[1]
;
Riff, Douglas
[2]
;
De Souza-Filho, Jonas P.
[3]
;
Hsiou, Annie Schmaltz
[1]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Biol, BR-14040901 Ribeirao Preto, SP - Brazil
[2] Univ Fed Uberlandia, Inst Biol, BR-38400902 Uberlandia, MG - Brazil
[3] Univ Fed Acre, Museu Paleontol, BR-69915900 Rio Branco, AC - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | PALAEONTOLOGIA ELECTRONICA; v. 22, n. 2 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
This study is a thorough assessment on the morphology and taxonomy of Mourasuchus amazonensis, a fossil crocodylian of the Caimaninae Glade from the late Miocene Solimoes Formation of Brazil. A thorough redescription of the holotype of the species (DGM 562-R, a nearly complete skull with an associated incomplete left mandible) is performed together with the redescription of the specimen UFAC-1424, a posterior portion of the skull with associated mandibular remains, and the description of the specimen LACM-160157, also a posterior portion of the cranium. As such, this paper brings the most comprehensive osteological study of M. amazonensis to be performed to date, enabling a thorough taxonomic reassessment of the species in question. This reassessment confirmed M. amazonensis as a valid species, with two autapomorphies and two other distinctive characters. UFAC-1424 and LACM-160157 are assigned as Mourasuchus cf. M. amazonensis, pending further studies on the taxonomy of the species in order to clarify whether these specimens belong to the same species as DGM 526-R. Additionally, implications of the morphology observed in M. amazonensis for the taxonomic status of other Mourasuchus species are also discussed, especially with respect to M. nativus, which is currently a junior synonym of M. arendsi. (AU) | |
| FAPESP's process: | 13/04516-1 - Syatematic Revision of the Mourasuchus genus (Alligatoroidea, Caimaninae), one of the most peculiar crocodiles of the world |
| Grantee: | Giovanne Mendes Cidade |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 11/14080-0 - Cretaceous and Tertiary (Paleogene/Neogene) Squamates (Reptilia, Lepidosauria) from the Bauru, Aiuruoca and Acre basins: systematics, evolution and palaeoenvironments |
| Grantee: | Annie Schmaltz Hsiou |
| Support Opportunities: | Research Grants - Young Investigators Grants |