Reigitherium
| Reigitherium Temporal range: Late Cretaceous, Campanian–Maastrichtian | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| 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.[1]
Reigitherium was initially classified in the order Dryolestida.[2] 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.[3][4] In 2011, Rougier et al. found it to be a Dryolestoid again, within Meridiolestida, a clade composed of Gondwanan Dryolestoids.[5] It "differs from other Mesozoic mammals including docodontans in that the lower molars decrease in length and notably increase in width posteriorly."[6]
References
- ↑ Trevor (2007) Dinos, Fossils, Children, England, Germany… Acceso: 31 de octubre de 2007.
- ↑ 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
- ↑ http://www.dinodata.org/index.php?option=com_content&task=view&id=8080&Itemid=143