The maxillary canal of the titanosuchid Jonkeria (Synapsida, Dinocephalia).

Benoit, Julien; Norton, Luke A; Jirah, Sifelani

Benoit, Julien; Norton, Luke A; Jirah, Sifelani.

Afiliación

Benoit J; Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa. julien.benoit@wits.ac.za.
Norton LA; Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa.
Jirah S; Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa.

Naturwissenschaften ; 110(4): 27, 2023 Jun 05.

Article en En | MEDLINE | ID: mdl-37272962

RESUMEN

The maxillary canal of the titanosuchid dinocephalian Jonkeria is described based on digitised serial sections. We highlight that its morphology is more like that of the tapinocephalid Moschognathus than that of Anteosaurus. This is unexpected given the similarities between the dentition of Jonkeria and Anteosaurus (i.e., presence of a canine) and the fact that the branching pattern of the maxillary canal in synapsids usually co-varies with dentition. Hypotheses to account for similarities between Jonkeria and Moschognathus (common ancestry, function in social signalling or underwater sensing) are discussed. It is likely that the maxillary canal carries a strong phylogenetic signal, here supporting the clade Tapinocephalia.

Asunto(s)

Ambiente; Maxilar; Animales; Perros; Filogenia; Maxilar/anatomía & histología

Palabras clave

Behaviour; Dinocephalia; Maxillary canal; Phylogeny; Sections; Trigeminal

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ambiente / Maxilar Límite: Animals Idioma: En Revista: Naturwissenschaften Año: 2023 Tipo del documento: Article País de afiliación: Sudáfrica Pais de publicación: Alemania

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