capsular process
{{Short description|Bony capsules located in rodents}}
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File:Oryzomys palustris mandible caps.png (Oryzomys palustris) has a reduced capsular process.Weksler, 2006, p. 42]]
In rodents, the capsular process or projection is a bony capsule that contains the root of the lower incisor. It is visible on the labial (outer) side of the mandible (lower jaw) as a raising in the bone.Weksler, 2006, p. 41 There is marked variation within species in the development of this process.Steppan, 1995, p. 26
Most oryzomyines have a well-developed capsular process, which is usually located behind the coronoid process, but many have a small one, and some lack the structure entirely.Weksler, 2006, pp. 41–42 Phyllotines and akodontines are also variable in their development of a capsular process.Steppan, 1995, table 4, char. 33
References
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Literature cited
- Steppan, S.J. 1995. Revision of the tribe Phyllotini (Rodentia: Sigmodontinae), with a phylogenetic hypothesis for the Sigmodontinae. Fieldiana Zoology 80:1–112.
- Weksler, M. 2006. [http://hdl.handle.net/2246/5777 Phylogenetic relationships of oryzomyine rodents (Muroidea: Sigmodontinae): separate and combined analyses of morphological and molecular data]. Bulletin of the American Museum of Natural History 296:1–149.