Ecteniniidae

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 speciations towards cursoriality.[3]

Ecteniniidae
Temporal range: Late Triassic,
Life restoration of the ecteniniid Trucidocynodon riograndensis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Clade: Cynodontia
Clade: Probainognathia
Family: †Ecteniniidae
Martínez et al., 2013
Genera

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.


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