Spalacotheriidae
Spalacotheriidae is a family of extinct mammals belonging to the paraphyletic group 'Symmetrodonta'. They lasted from the Early Cretaceous to the Campanian in North America, Europe, Asia and North Africa.
| Spalacotheriidae Temporal range: Early Cretaceous - Late Cretaceous, | |
|---|---|
 | |
| Restoration of Yaverlestes | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | †Symmetrodonta |
| Superfamily: | †Spalacotherioidea |
| Family: | †Spalacotheriidae Marsh, 1887 |
| Genera | |
|
See text | |
Spalacotheriids are characterised by having molar teeth with three molar cusps sitting at acute angles to one another.[1] The shape of their teeth as well as their long lower jaw indicate a carnivorous/insectivorous diet.[2]
A sub-group of Spalacotheriidae, the spalacolestines, lack a Meckelian groove in the jaw, indicating that they had a modern ear anatomy.[1]
Genera
- Akidolestes
- Infernolestes
- Spalacotherium
- Symmetrolestes
- Spalacolestinae[2]
- Aliaga
- Heishanlestes
- Lactodens
- Shalbaatar
- Spalacolestes
- Spalacotheridium
- Spalacotheroides
- Symmetrodontoides
- Yaverlestes
References
- Martin, T., 2018. 6. Mesozoic mammals—early mammalian diversity and ecomorphological adaptations. In Mammalian evolution, diversity and systematics (pp. 199-300). De Gruyter.
- Han, Gang; Meng, Jin (2016). "A new spalacolestine mammal from the Early Cretaceous Jehol Biota and implications for the morphology, phylogeny, and palaeobiology of Laurasian 'symmetrodontans'". Zoological Journal of the Linnean Society. 178 (2): 343–380. doi:10.1111/zoj.12416.
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