Artículo
An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
Kerber, Leonardo; Ferreira, José Darival; Fonseca, Pedro Henrique M.; Franco, Arymatheia; Martinelli, Agustín Guillermo
; Soares, Marina Bento; Ribeiro, Ana Maria
Fecha de publicación:
03/2021
Editorial:
Academia Brasileira de Ciencias
Revista:
Anais da Academia Brasileira de Ciencias
ISSN:
0001-3765
e-ISSN:
1678-2690
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Recently, the morphology and encephalization of the brain endocast of the Triassic non-mammaliaform probainognathian cynodont Riograndia guaibensis were studied. Here, we analyzed the brain endocast of an additional specimen of this species. The new endocast shows well-defined olfactory bulbs and a median sulcus dividing the hemispheres, traits that were not clearly observed in the first studied specimen. Encephalization quotients were also calculated, revealing similar values to other non-mammaliaform cynodonts and lower than those of the first analyzed specimen. The analyzed cranium is slightly larger than the first studied one and may represent an advanced ontogenetic stage. Hence, these differences may be related to the intraspecific variation of this cynodont or alternatively, to the preservation of each specimen.
Palabras clave:
ENDOCRANIUM
,
ICTIDOSAURIA
,
MICRO-CT
,
PALEONEUROLOGY
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(MACNBR)
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Citación
Kerber, Leonardo; Ferreira, José Darival; Fonseca, Pedro Henrique M.; Franco, Arymatheia; Martinelli, Agustín Guillermo; et al.; An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 93; 3-2021; 1-8
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