| Scalenodontoides Temporal range:
| |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Clade: | Therapsida |
| Clade: | Cynodontia |
| Family: | †Traversodontidae |
| Subfamily: | †Gomphodontosuchinae |
| Genus: | †Scalenodontoides |
| Type species | |
| Scalenodontoides macrodontes Crompton & Ellenberger, 1957
| |
Scalenodontoides is an extinct genus of Traversodontidae, a family of herbivorous cynodonts. It lived during the Late Triassic in what is now South Africa. Its type species is Scalenodontoides macrodontes.[1] It was named in 1957 by A. W. Crompton and F. Ellenberger.[1] Arctotraversodon plemmyrodon was originally classified as a species of Scalenodontoides, but was given its own genus in 1992.[2] It is found in the Scalenodontoides Assemblage Zone of the Elliot Formation, which is named for it.[3] It is one of the geologically youngest traversodontids, alongside the putative traversodontid Boreogomphodon.[4] It is closely related to Exaeretodon and Siriusgnathus,[5] but is distinguished by the presence of a shelf-like expansion of its parietal called the nuchal table.[6] Though the largest known complete skull is only 248 millimetres (9.8 in) long, it may have been the largest non-mammalian cynodont, as an incomplete snout would have belonged to a specimen with an estimated skull length of 617 millimetres (24.3 in).[7]
- ^ a b Crompton & Ellenberger 1957, p. 2.
- ^ Sues, Hopson & Shubin 1992.
- ^ Viglietti et al. 2020.
- ^ Miron et al. 2020, p. 6.
- ^ Pavanatto et al. 2018.
- ^ Gow & Hancox 1993, p. 162.
- ^ Tolchard et al. 2021, p. 14.