Nelsonia Merriam 1897

Nelsonia Merriam 1897, Proc. Biol. Soc. Wash., 11: 277.

Type Species: Nelsonia neotomodon Merriam 1897

Species and subspecies: 2 species:

Species Nelsonia goldmani Merriam 1903

Species Nelsonia neotomodon Merriam 1897

Discussion: Neotomini. Viewed as a basal member of clade including Neotoma and related genera (Carleton, 1980; Engel et al., 1998; Hooper, 1954, 1960). Phylogenetic significance of banded karyotype discussed by Engstrom and Bickham (1983). Revised initially by Hooper (1954), who recognized a single species, and later by Engstrom et al. (1992), who resurrected N. goldmani as distinct from N. neotomodon .