On the presence of the subnarial foramen in Prestosuchus chiniquensis (Pseudosuchia: Loricata) with remarks on its phylogenetic distribution
Título del documento: On the presence of the subnarial foramen in Prestosuchus chiniquensis (Pseudosuchia: Loricata) with remarks on its phylogenetic distribution
Revista: Anais da Academia Brasileira de Ciencias
Base de datos: PERIÓDICA
Número de sistema: 000400425
ISSN: 0001-3765
Autores: 1
2
2
1
3
Instituciones: 1Universidade Federal de Santa Maria, Programa de Pos-Graduacao em Biodiversidade Animal, Santa Maria, Rio Grande do Sul. Brasil
2Universidade Federal do Vale do Sao Francisco, Campus de Ciencias Agrarias, Petrolina, Pernambuco. Brasil
3Universidade Federal de Santa Maria, Centro de Apoio a Pesquisa da Quarta Colonia, Sao Joao do Polesine, Rio Grande do Sul. Brasil
Año:
Periodo: Sep
Volumen: 88
Número: 3
Paginación: 1309-1324
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés Many authors have discussed the subnarial foramen in Archosauriformes. Here presence among Archosauriformes, shape, and position of this structure is reported and its phylogenetic importance is investigated. Based on distribution and the phylogenetic tree, it probably arose independently in Erythrosuchus, Herrerasaurus, and Paracrocodylomorpha. In Paracrocodylomorpha the subnarial foramen is oval-shaped, placed in the middle height of the main body of the maxilla, and does not reach the height of ascending process. In basal loricatans from South America (Prestosuchus chiniquensis and Saurosuchus galilei) the subnarial foramen is 'drop-like' shaped, the subnarial foramen is located above the middle height of the main body of the maxilla, reaching the height of ascending process, a condition also present in Herrerasaurus ischigualastensis. These results suggest that this structure might be phylogenetically important and further investigation with a large set of valid taxa is necessary to properly evaluate its importance among Archosauria
Disciplinas: Biología
Palabras clave: Anatomía e histología,
Paleontología,
Taxonomía y sistemática,
Reptiles,
Análisis morfológico,
Fósiles,
Foramen subnarial,
Prestosuchus chiniquensis,
Archosauria,
Relaciones filogenéticas
Keyword: Biology,
Anatomy and histology,
Paleontology,
Taxonomy and systematics,
Reptiles,
Morphological analysis,
Fossils,
Subnarial foramen,
Prestosuchus chiniquensis,
Archosauria,
Phylogenetic relationships
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