id author title date pages extension mime words sentences flesch summary cache txt 42720 Moojen, João Speciation in the Brazilian Spiny Rats .txt text/plain 33653 3360 70 _Proechimys_--main fold shallow: aristiforms not developed on rump and The primitive _Proechimys_ probably was large with a short tail, narrow one counterfold anterior to main fold in upper molariform teeth and posterior to main fold in lower molariform teeth; premolars usually aristiforms long and narrow; general color on upper parts Brazil and Bolivia, two species of _Proechimys_ live together and one of narrow; skull slender; incisive foramen wide; vomerine sheath upper molariform teeth and lower premolar with three counterfolds; upper molariform teeth and lower premolar with three counterfolds; vomerine sheath usually complete; upper molariform teeth and lower subspecies of three species of the subgenus _Proechimys_ in Brazil.] differs in: wider aristiforms; general color on upper parts Tawny, subspecies of _Proechimys guyannensis_ in Brazil.] fold in upper molariform teeth and usually no counterfold posterior upper molariform teeth usually with one to five counterfolds, number _Specimens examined._--Total number, 18 (MN), from Brazil, Rio de ./cache/42720.txt ./txt/42720.txt