GEOGRAPHIC DISTRIBUTION BY STATES 



Fig. 1 



Saskatchewan 



1 1 miles southeast of Swift Current — Proto- 



reodon pumilus, P. sp. 

 Southwest of Swift Current, on Swift Current 



Creek, at Bone Coulee — Merycoidodon 



culbertsonii, M. sp. 



California 



Kern County 



West-northwest of Ricardo P. O. — Meto- 



reodon calijomicus 

 Tecuya Canyon — Promerycochcerus ery- 



throceps 



Los Angeles County 



Mint Canyon, Santa Clara Valley — Mery- 

 chyus sp. 



San Bernardino County 



Barstow syncline, north of Barstow — Mery- 

 cochoerus buwaldi 



Ventura County 



Apache Canyon, west of Mt. Pinos — 

 ? Merycochcerus buwaldi 



Near Santa Paula — Cyclopidius calijomi- 

 cus, Promerycochcerus hesperus 



Willard Canyon, South Mountain — Epo- 

 reodon t/iurstoni 



Colorado 



Logan County 



Castle Rock — Eporeodon major cedrensis 

 Horsetail Creek — Merycoidodon affinis, 



M. culbertsonii periculonim, Merychyns 



elegans paniensis 



Weld County 



Pawnee Buttes — Merychyus elegans pani- 

 ensis 



Pawnee Creek — Merychyus sp., Meryco- 

 chcerus proprius 



Geary's Ranch — Merycoidodon culbert- 

 sonii 



Northeast section, exact localities unre- 

 corded — Eporeodon major hybridus, E. 

 sp., Leptauchenia decora, Merychyus 



Colorado — Continued 



Northeast section — Continued 



elegans, Merycoidodon gracilis, Meto- 

 reodon major, M. medius, Promeryco- 

 chcerus sp., Ticholeptus rusticus 



Montana 



Beaverhead County 



Big Hole River, north of Dillon — Ore- 



onetes anceps 

 Grasshopper Creek, 10 mi. above Ban- 

 nack — Ticholeptus bannackensis 



Broadwater County 



Northeast of Toston, Missouri River 

 Valley — Eporeodon helerue, Merycoi- 

 dodon macrorhinus 



Near Toston, Missouri River Valley — 

 Merycoidodon culbertsonii, ^.Ticholep- 

 tus obliquidens 



Gallatin County 



Thompson's Creek, near Three Forks — 



Limnenetes platyceps, Oreonetes anceps 

 Lower Madison Valley — Metoreodon com- 



pressidens, Pronomotherium madisonium 

 Lower Madison Valley, 7 mi. south of 



Logan — Pronomotherium elrodi 

 Lower Madison Valley, 10 mi. from Three 



Forks — Pronomotherium altiramus 



Granite County 



Near Drummond, Hellgate River — Pro- 

 merycochcerus hollandi minor 



Near New Chicago — Poatrephes paludi- 

 cola, Pronomotherium laticeps, Ticho- 

 leptus smithi 



Jefferson County 



North Boulder River — Merycoides longi- 



ceps, Promerycochcerus sp., Ticholeptus 



brachymelis 

 Pipestone Springs — Bathygenys alpha 



Lewis & Clark County 



1 1 miles northeast of Helena, near Stubb's 



Ferry — Eporeodon montanus 

 20 miles east of Helena, at Canyon Ferry — 

 Cyclopidius sp., Eporeodon helence, 



