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Class Mammalia
Order Rodentia
Family Cricetidae
Subfamily Neotominae


Neotoma (Paraneotoma) sp.—Paraneotoma WoodratsRegional Pleistocene distribution of Neotoma (Paraneotoma) sp.

Neotoma (Paraneotoma) was described by Hibbard (1967):

Paraneotoma subgenus nov.

Type.Parahodomys quadriplicatus Hibbard 1941.

   Characters of the subgenus.-Neotoma (Paraneotoma) quadriplicatus Hibbard differs from all other Recent Neotoma in having shorter crowned teeth and thicker enamel. The anterocone of M1 is narrower. Some M1s in the early stage of wear have a shallow anteromedian groove. The paracone, hypocone, and metacone of M1 and M2 are more distinct as individual cusps than in Recent species. In Paraneotoma they wear to form a C-shaped occlusal pattern. Not all M3s consist of four parts separated by four reentrant angles as shown by Hibbard (1941, pl. 2, figs. 4, 6, and 8). Some unworn M3s lack the posterior internal reentrant angle and wear to a normal pattern as in Recent species. All of the upper molars possess better developed roots and the two posterior roots are not fused in old adults.
   M3 has a distinctive S pattern as in the subgenus Hodomys, though the enamel is thicker and the reentrant angles broader and shallower. The anterolabial reentrant angle is much shallower in Paraneotoma.


Late Blancan/Early Irvingtonian: Elsinore: Mimomys (Pajak et al. 1996).

Early Irvingtonian: Gypsum Ridge (Wagner and Prothero 2001).

Literature. Hibbard 1967; Pajak et al. 1996; Wagner and Prothero 2001.


Last Update: 21 Apr 2014