Reigitherium
| Reigitherium Temporal range: Late Cretaceous, Campanian–Maastrichtian | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Class: | Mammalia |
| Branch: | †Meridiolestida |
| Family: | †Reigitheriidae |
| Genus: | †Reigitherium Bonaparte, 1990 |
| Species: | †R. bunodontum |
| Binomial name | |
| Reigitherium bunodontum Bonaparte, 1990 | |
Reigitherium bunodontum is a mammal that lived during the Late Cretaceous (Late Campanian-Maastrichtian). Fossils of it have been found in the Los Alamitos and the La Colonia Formations of Argentina.
Reigitherium was initially classified in the order Dryolestida.[1] In 2000 Pascual et al. found it to be a Docodont. Later authors found it to be neither a dryolestoid nor a docodont, and found it to be of uncertain placement within Mammalia.[2][3] In 2011, Rougier et al. found it to be a Dryolestoid again, within Meridiolestida, a clade composed of Gondwanan Dryolestoids.[4] It "differs from other Mesozoic mammals including docodontans in that the lower molars decrease in length and notably increase in width posteriorly."
References
- ↑ Bonaparte, J.F. (1990) New Late Cretaceous mammals from the Los Alamitos Formation, northern Patagonia National Geographic Research 6 (1), p.63-93.
- ↑ Pascual R., Goin F.J., Gonzalez P., Ardolino A. & Puerta P.F. (2000) A highly derived docodont from the Patagonian Late Cretaceous Geodiversitas 22 (3) Documento pdf.
- ↑ Mikko Haaramo (2007) Mikko's Phylogeny Archive Acceso: 31 de octubre de 2007.
- ↑ Guillermo W. Rougier, Sebastián Apesteguía and Leandro C. Gaetano (2011). "Highly specialized mammalian skulls from the Late Cretaceous of South America". Nature. 479: 98–102. doi:10.1038/nature10591. Supplementary information
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