Candelariodon

Candelariodon is an extinct genus of carnivorous probainognathian cynodonts from the Middle to Late Triassic Santa Maria Formation of the Paraná Basin in Rio Grande do Sul state, Brazil. Candelariodon is known from a partial mandible having some complete teeth. It was first named by Téo Veiga de Oliveira, Cesar Leandro Schultz, Marina Bento Soares and Carlos Nunes Rodrigues in 2011 and the type species is Candelariodon barberenai.[1]

Candelariodon
Temporal range: LadinianCarnian
~242–235 Ma
Candelariodon barberenai holotype - Santa Maria Formation, Paraná Basin, Brazil.jpg
Holotype fossil of C. barberenai
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Clade: Cynodontia
Clade: Probainognathia
Genus: Candelariodon
de Oliveira et al., 2011
Species:
C. barberenai
Binomial name
Candelariodon barberenai
de Oliveira et al., 2011

DescriptionEdit

 
Lower postcanine dentition of C. barberenai

The holotype (MMACR PV-0001-T) of Candelariodon barberenai comes from the Dinodontosaurus Assemblage Zone of the Pinheros-Chiniquá Sequence, Santa Maria Supersequence. It corresponds to the lower portion of the traditional Santa Maria Formation and the Santa Maria 1 Sequence of Zerfass et al. (2003). The outcrop that yielded MMACR PV-0001-T is located about 20 kilometres (12 mi) south of Candelária, Rio Grande do Sul, southeastern Brazil, in the Pinheiro, an area in which several tetrapods characteristic of the Dinodontosaurus Assemblage Zone have been discovered.[2]

ClassificationEdit

Martinelli et al. (2017) performed a phylogenetic analysis where Candelariodon was recovered as the sister taxon of a clade formed by Protheriodon and Prozostrodontia; a cladogram from that study is shown below:[2]

Probainognathia

Ecteninion

Chiniquodon

Bonacynodon

Probainognathus

Candelariodon

Protheriodon

Prozostrodontia

Prozostrodon

Therioherpeton

Pachygenelus

Riograndia

Oligokyphus

Kayentatherium

Bienotherium

Tritylodon

Botucaraitherium

Brasilitherium

Brasilodon

Adelobasileus

Sinoconodon

Mammaliaformes

ReferencesEdit

  1. ^ de Oliveira, T. V.; Schultz, C. L.; Soares, M. B.; Nunes Rodrigues, C. (2011). "A new carnivorous cynodont (Synapsida, Therapsida) from the Brazilian Middle Triassic (Santa Maria Formation): Candelariodon barberenai gen. et sp. nov". Zootaxa. 3027: 19–28. ISSN 1175-5334. Retrieved 2019-03-26.
  2. ^ a b Martinelli, A. G.; Soares, M. B.; de Oliveira, T. V.; Rodrigues, P. G.; Schultz, C. L. (2017). "The Triassic eucynodont Candelariodon barberenai revisited and the early diversity of stem prozostrodontians" (PDF). Acta Palaeontologica Polonica. 62: 527–542. doi:10.4202/app.00344.2017. Retrieved 2019-03-25.