Ecteniniidae

Ecteniniidae Temporal range: Late Triassic, Norian PreꞒ Ꞓ O S D C P T J K Pg N
Life restoration of the ecteniniid Trucidocynodon riograndensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Clade:	Probainognathia
Family:	†Ecteniniidae Martínez et al., 2013
Genera
†Diegocanis †Ecteninion †Trucidocynodon

Ecteniniidae is an extinct family of probainognathian cynodonts from the Triassic of South America.^[1] They are notable for their large size,^[1][2] as well as for being among the first synapsids with specializations towards cursoriality.^[3]

Phylogeny

Below is a cladogram from Martínez et al. (2013):^[1]

Cynodontia	Procynosuchus Galesaurus Thrinaxodon Platycraniellus Eucynodontia Cynognathia Probainognathia Lumkuia Chiniquodon Probainognathus Ecteniniidae Diegocanis Ecteninion Trucidocynodon Prozostrodontia Prozostrodon Therioherpeton Tritylodontidae Oligokyphus Tritylodon Bienotherium Kayentatherium Pachygenelus Riograndia Brasilodon Mammaliaformes Adelobasileus Sinoconodon Morganucodon

References

1. n. Martínez, R.; Fernandez, E.; a. Alcober, O. (2013). "A new non-mammaliaform eucynodont from the Carnian-Norian Ischigualasto Formation, Northwestern Argentina". Revista Brasileira de Paleontologia. 16 (1): 61–76. doi:10.4072/rbp.2013.1.05.
2. Oliveira, T.V.; Soares, M.B.; Schultz, C.L. (2010). "Trucidocynodon riograndensis gen. nov. et sp. nov. (Eucynodontia), a new cynodont from the Brazilian Upper Triassic (Santa Maria Formation)". Zootaxa. 2382: 1–71.
3. Téo Veiga, De Oliveira; Leandro Schultz, Cesar (2016). "Functional morphology and biomechanics of the cynodont Trucidocynodon riograndensis from the Triassic of Southern Brazil: Pectoral girdle and forelimb". Acta Palaeontologica Polonica. 61 (2): 377–386. doi:10.4202/app.00171.2015.