| Ecteninion Temporal range:
Carnian
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| Model | |
Scientific classification
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Clade: | Therapsida |
| Clade: | Cynodontia |
| Family: | † Ecteniniidae |
| Genus: | †
Ecteninion Martínez et al. 1996 |
| Type species | |
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†Ecteninion lunensis Martínez et al. 1996
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| Synonyms | |
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Ectenion ( sic) Stefanello et al. 2023 | |
Ecteninion is an extinct genus of meat-eating cynodonts that lived during the Late Triassic ( Carnian) in South America. The type species Ecteninion lunensis was named by R.N. Martinez, C.L. May, and C.A. Forster in 1996. E. lunensis is known from a nearly complete skull of about 11 centimetres (4.3 in) in length. It was found in the Cancha de Bochas Member of the Ischigualasto Formation in the Ischigualasto-Villa Unión Basin in northwestern Argentina. [1] It has been interpreted as a basal eucynodont. The holotype is in the collection of the Universidad Nacional de San Juan.
Phylogeny
Ecteninion in a cladogram after Hopson & Kitching (2001): [2]
Cladogram after Stefanello et al. (2023): [3]
| Ecteniniidae |
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References
- ^ Ecteninion at Fossilworks.org
- ^ Hopson, J. A. and Kitching, J. W. (2001). A probainognathian cynodont from South Africa and the phylogeny of non-mammalian cynodonts. Bulletin of the Museum of Comparative Zoology 156(1):5-35
- ^ Stefanello, M.; Martinelli, A. G.; Müller, R. T.; Dias-da-Silva, S.; Kerber, L. (2023). "A complete skull of a stem mammal from the Late Triassic of Brazil illuminates the early evolution of prozostrodontian cynodonts". Journal of Mammalian Evolution. doi: 10.1007/s10914-022-09648-y.
Further reading
- Martinez et al. (1996) "A new carnivorous cynodont from the Ischigualasto formation (Late Triassic, Argentina), with comments on eucynodont phylogeny." J. Vertebr. Paleontol. 16(2), p. 271-284.
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