New material ofMenadon besairiei(Cynodontia: Traversodontidae) from the Triassic of Madagascar

Autor:	Lovasoa Ranivoharimanana, Christian F. Kammerer, John J. Flynn, André R. Wyss
Rok vydání:	2008
Předmět:	Autapomorphy biology Paleontology Anatomy biology.organism_classification Traversodontidae Cynodont Skull Massetognathus medicine.anatomical_structure Eucynodontia medicine Cusp (anatomy) Cingulum (tooth) Geology
Zdroj:	Journal of Vertebrate Paleontology. 28:445-462
ISSN:	1937-2809 0272-4634
DOI:	10.1671/0272-4634(2008)28[445:nmombc]2.0.co;2
Popis:	New material of the traversodontid cynodont Dadadon isaloi from the Triassic of southwestern Madagascar is described. The new material consists of a complete, well-preserved skull (FMNH PR 2232) and an unassociated, partial lower jaw (UA 10608). The new material reveals several novel aspects of Dadadon's morphology. Newly recognized autapomorphies that diagnose Dadadon include a fourth upper incisor with posterior accessory cusp, deep interorbital depressions confined to the frontals, and a very tall, robust mid-frontal ridge. Dadadon can further be distinguished from the similar traversodontids Massetognathus and Santacruzodon by the presence of shorter, broader prefrontals with prominent dorsal depressions, robust anterolateral processes overhanging the orbits, a single cusp in the anterior cingulum of the upper postcanines, and relatively elongate, striated, conical upper incisors. In a revised phylogenetic analysis incorporating data from the new specimens, Dadadon is recovered in a clade wit...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8bb3dcb47da4c834125e3170f0720a8e https://doi.org/10.1671/0272-4634(2008)28[445:nmombc]2.0.co Zobrazit plný text záznamu