OF WESTERN KORTH AMERICA. 



115 



MIDDLE MIOCENE— Continued. 



PERISSODACTYJLA-Con. 



TAPIRIDiE. 



Tapiravus sp 



Equiua:. 



Merychippus sejunctus (Cope) . . 

 Merychippus labrosus (Cope) . . . 

 Merychippus isonesus (Cope) . .. 

 Merychippus paniensis (Cope) . . 

 Merychippus sphenodus (Cope). 

 Merychippus seversus (Cope) . . . 

 Merychippus campestris Gidley. 



Hypohippus equinus Scott 



Hypohippus osbomi Gidley 



Hypohippus sp 



Parahippus crenidens (Scott)... 

 Parahippus brevidens (Marsh).. 



Parahippus avus (Marsh) 



Parahippus pawniensis Gidley. . 

 Parahippus coloradensis Gidley. 

 Archaeohippus ultimus (Cope) .. 

 Archaeohippus sp. div 



Chalicotheriid^. 

 Moropus sp 



ARTIODACTYLA. 



DlCOTYLID^ ( = TAGASSUlDyE). 



Hesperhys vagrans Douglass . . . 



OREODONTID.E ( = AGRI0CH(E- 

 RID^). 



Pronomotherium 1 a t i e e p s 



(Douglass) 



Merycochoeruscf . proprius Leidy 

 Merycochcerus cf. rusticus Leidy 

 Promerycochoerus montanus 



(Cope) 



?Promerycoch(Erus obliquidens 

 (Cope) 



1. 







2. 







3. 



~~ 



4. 









X 









X 









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X 





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X 





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ARTIODACTYLA— Con. 



OREODONTID.E (=AgRIOCH(E- 



RiDiE— Continued. 



Ticholeptus zygomaticus Cope.. 



Ticholeptus brachymelis Doug- 

 lass 



Ticholeptus breviceps Douglass. 



Ticholeptusbannackensis Doug- 

 lass 



Poatrephes paludicola Douglass. 



Mesoreodon longiceps Douglass. 



Merychyus pariogonus Cope 



Merychyus smithi Douglass 



Merychyus sp. div 



Cyclopidius (=Pithecistes) de- 

 cedens (Cope) 



Cyclopidius (= Pithecistes) 

 emydinus Cope 



Cyclopidius (= Pithecistes) 

 simus Cope 



Cyclopidius (= Pithecistes) in- 

 cisivus Scott 



Camelid^. 



Miolabis transmontanus (Cope) 

 Protolabis longiceps sp. nov.«. 

 Protolabis heterodontus Cope. . 

 Protolabis angustidens (Cope).. 



Procamelus flssidens Cope 



Alticamelus altus (Marsh) 



Alticamelus leptocolon sp. nov.b 



CeRVID^ (PALiEOMERYCIN^). 



Palaeomeryx borealis Cope 



Palseomeryx antilopinus Scott . 



Palaeomeryx sp 



Blastomeryx gemmifer Cope 



Antilocaprid^ (Merycodon- 



TIN^) . 



Merycodus osborni Matthew 





2. 







3. 



— 



X 











V 







X 







X 







X 







X 



X 











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X 





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? 



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UPPER MIOCENE AND FLOWER PLIOCENE. 



FORMATION SeCOND PHASE — OoALALLA FORMATION. 



Peraceras zone (doubtfully separable). 



First phase — Arikaree 

 (in part). 



Procamelus zone. 



1. Fort Niobrara ("Nebraska formation"), Ne- 



2. Little White River, South Dakota. 



3. Santa Fe, New Mexico. 



4. Clarendon, Texas. 



5. Madison Valley, Montana. 



CARNIVORA. 



Canid^, 



.Sllurodon saevus (Leidy) , 



.ffilurodon haydeni (Leidy) 



.ffilurodon wheelerianus (Cope) c 



? -lElurodon compressus Cope 



? ? iElurodon hyaenoides Cope 



Amphicyon americanus Wortman 



? Dinocyon ursinus (Cope) 



Dinocyon mseandrinus Hatcher 



Dinocyon gidleyi Matthew 



Dinocyon ossifragus Douglass 



"Canis" vafer Leidy 



"Canis" temerarius Leidy , 



Ischyrocyon hyaenodus Matthew 



1. Republican River, Kansas and Nebraska. 



2. Archer, Florida (Alachua clays). 



3. Rattlesnake, Oregon. 



a "P. montanus Douglass," Matthew, Mem. Am. Mus. Nat. Hist., vol.1, pt. 7, 1901, p. 435, figs. 31-33. 

 Not P. montanus of Douglass. 

 b "Procamelus robustus Leidy," Matthew, op. cit., p. 427, fig. 30. Not P. robustus of Leidy. 

 c Including yE. taxoides Hatcher. 



