Rodent mandible, seen from the left, with a small process at the back circled.
The marsh rice rat (Oryzomys palustris) has a reduced capsular process.[1]

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.[2] There is marked variation within species in the development of this process.[3]

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.[4] Phyllotines and akodontines are also variable in their development of a capsular process.[5]


  1. ^ Weksler, 2006, p. 42
  2. ^ Weksler, 2006, p. 41
  3. ^ Steppan, 1995, p. 26
  4. ^ Weksler, 2006, pp. 41–42
  5. ^ Steppan, 1995, table 4, char. 33

Literature citedEdit