Riojanodon

Riojanodon is an extinct genus of chiniquodontid cynodont that inhabited what is now Argentina during the latest Middle and earliest Late Triassic epochs. It is a monotypic genus known from the species R. nenoi.^[1]

Riojanodon Temporal range: Triassic PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Family:	†Chiniquodontidae
Genus:	†Riojanodon
Species:	†R. nenoi
Binomial name
†Riojanodon nenoi Martinelli et. al., 2024

Phylogeny

The cladogram below is from the study that described Riojanodon.^[1]

Probainognathia

Lumkuia fuzzi Chiniquodontidae Chiniquodon theotonicus Aleodontinae Aleodon brachyrhamphus Aleodon cromptoni Riojanodon nenoi CRILAR-PV 567 Cromptodon mamiferoides Probainognathidae Probainognathus jenseni Bonacynodon schultzi Ecteniniidae Trucidocynodon riograndensis Diegocanis elegans Ecteninion lunensis Protheriodon estudianti Agudotherium gassenae Prozostrodontia Prozostrodontidae Pseudotherium argentinus Prozostrodon brasiliensis Therioherpeton cargnini Irajatherium hernandezi Riograndia guaibensis Diarthrognathus broomi Pachygenelus monus Mammaliamorpha Botucaraitherium belarminoi Brasilodon quadrangularis Mammaliaformes Tritylodontidae Oligokyphus major Kayentatherium wellesi Tritylodon longaevus Bienotherium yunnanense