Named By: R. N. Martinez, C. L. May & C. A. Forster - 1996.
Classification: Chordata, Synapsida, Therapsida, Cynodontia, Ecteniniidae.
Species: E. lunensis (type).
Size: Skull about 11 centimetres long.
Known locations: Argentina - Ischigualasto Formation.
Time period: Late Triassic.
Fossil representation: Skull.
Ecteninion is a genus of cynodont that lived in South America during the late Triassic. Ecteninion is also the type genus of the Ecteniniidae group of cynodonts which includes genera such as Diegocanis and the huge Trucidocynodon.
- A new carnivorous cynodont from the Ischigualasto Formation (Late Triassic, Argentina), with comments on eucynodont phylogeny. - Journal of Vertebrate Paleontology 16(2):271-284. - R. N. Martinez, C. L. May & C. A. Forster - 1996.