. Monographs of North American rodentia [microform]. Rodentia; Paleontology; Rongeurs; Paléontologie. O.'JG MONOGkAl'lIS OF NOrwTU AM13UICAN RODENTIA,. m' h (jlrizzly Hiittrs, Wyoming. Citctl by Professor Cope as also occurring on the U|i|)iT (irfi-n K'ivcr. Professor Cope considers this species as giMierirally idenlical in denliiiou with Pnrani>/s, \o which genus he refers it, as above cited. SCIURAVUS TARVIDENS Marsh. Stiiirariit pani<U-n$ Mafisii, Amur. Joiirn. Sci, anil Arts, 3(1 ser. iv, 1373, S'20 Half the size of Sciuravus und<ivs, witli the lower incisor more coriv(;x in fiont
. Monographs of North American rodentia [microform]. Rodentia; Paleontology; Rongeurs; Paléontologie. O.'JG MONOGkAl'lIS OF NOrwTU AM13UICAN RODENTIA,. m' h (jlrizzly Hiittrs, Wyoming. Citctl by Professor Cope as also occurring on the U|i|)iT (irfi-n K'ivcr. Professor Cope considers this species as giMierirally idenlical in denliiiou with Pnrani>/s, \o which genus he refers it, as above cited. SCIURAVUS TARVIDENS Marsh. Stiiirariit pani<U-n$ Mafisii, Amur. Joiirn. Sci, anil Arts, 3(1 ser. iv, 1373, S'20 Half the size of Sciuravus und<ivs, witli the lower incisor more coriv(;x in fiont tiian in tiiat species. Described from a "lower jaw containing the thini molar, and part of an upper jaw with the penultimate molar, and sev- eral isolated teeth". From Henry's Fork and Grizzly Buttes, Wyoming. ? SCIURAVUS Leidy. f Sdvrariid Lkidv, Extinct Vort. Fauna, 1673,113, 335, pi. vi, flg. 30. Size of the last. Described and figured by Dr. Leidy (/. c.) from part of a maudibidar ramus, containing the third molar and the alveoli of the sec- oiul and fourth molars, from Grizzly Buttes, Wyoming. Referred doul)tfully to this genus by Dr. Leidy, it being considered by him as not referable to Paramt/s. Genus IIELISCOMYS Cope. ncUtoomyn CoPE, " Synop. Now Vert Colorado, 1S73, 3 "; Ann. Rep. 0«ol. Burv. Terr, for 1973 (1874), 475. "Liferior molars four; the crowns supporting four isolated cones in pairs. Tliis genus is only known from mandibular rami. These resemble in their dental structure some of the Murida, but the number uf molars is more, as in ; IIELISCOMYS VETUS Cope. UeliKomyi rtlia CoPK, "Synop. Kow Vert. Colorado, 1S73,4"; Ann. Bcp. OeoL 8unr. Terr, for 1873 (1-^71), ITS. Smaller than Scinrus hudsonius. " The least mammal of tlie fauna to which it ; "First molar with only three cones; all the molars except the first with a broad continuous cingulum on the ex ernal side. Ramus rather stout; in
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Keywords: ., bookcentury1800, bookdecade1870, bookpub, booksubjectpaleontology
