106 ON THE GEOLOGY AND NATURAL HISTORY 
VERTICAL SECTION, continued. 
38 
SuBDIVISIONs. : LocaLirigs. EE 
aS 
Light gray fine sand, with more or less calea-| Old Woman’s creek; also in many lo- 
. |Teous matter, passing down into an ash-colored | calities along the valley of the South fork 
o plastic clay, with large quantities of quartz grains|of Shyenne. Best development on Sage 
: disseminated through it, sometimes forming aggre-| and Bear creeks. Seen at several locali-| # 
<>] a g to] gs : $ 
2 | g | gated masses like quartzose sandstone cemented | ties in the valley of White river. Me 
By ‘= | with plastic clay; then an ash-colored clay with a Ss 
& | & | greenish tinge, underlaid at base by a light gray g 
A E and ferruginous silicious sand and gravel, with S 
> | pinkish bands. Great quantities of silex in the 
form of seams all through the beds. Titanotherium 
Bed. 
"a aS ee 
he: Cretaceous beds 5 and 4, with their usual litho-| Exposed underneath the tertiary beds 
Ris logical characters and fossils. on the South fork of Shyenne and its 
_ + southern branches, also in White river 
a A valley near its source. 
2 
CATALOGUE OF ALL THE FOSSILS HITHERTO DESCRIBED, FROM THE TERTIARY FORMATIONS OF WHITE 
AND NIOBRARA RIVERS, WITH A TABLE SHOWING THEIR STRATIGRAPHICAL POSITION. 
Beds in ascending order.| Beds in ascending order. 
A. B.C. D.E.F. E. F. 
RUMINANTIA. MULTUNGULA. 
1. Oreodon gracilis, Leidy, - *##* 21. Cheropotamus (Hyopotamus) Americanus, L. * 
2. Oreodon Culbertsoni, Leidy, S * * * 22. Entelodon os Leidy, . ; ° ee 
3. Oreodon major, Leidy,. . . . . * * 23. Entelo een SS ee 
4. Agriocharus major, Leidy, . "  * 24. Tinicttlaeivns Prouti, Leidy, . 5 > = 
5. Agriocherus antiquus, Leidy, . oie oe 26. Paleocherusprobus, Leidy, . . . . %* ¥ 
6. Poebrotherium Wilsoni, Leidy, . Tee 27. Leptocherus speetabilis, Leidy,, —. ae = 
7. aw Evans, Leidy,. . . ; * * 28. Rhinoceros occidentalis, Leidy, * * ** 
8. Leptauchenia decora, Leidy,. . . , * 29. Rhinoceros (Hyracodon) Nebrascensis, Leiay, * eK 
9. Leptauchenia major, Leidy, . * 30. Rhinoceros crassus, Leidy. ” 
10. Protomeryx Halli, Leidy, * 31. Mastodon ( Tetralophodon) tise Laity. ‘ ‘a 
Il. Merycodus necatus, Leidy, . * | 32. Elephas (Euelephas) imperator, Leidy, . 
12. Megalomeryx Niobrahensis, Leidy, : . * 
13. Merychocherus proprius, Leidy, . ee * SOLIDUNGULA. 
14. Procamelus occidentalis, Leidy ; * | 33. Hipparion, S. Hippotherium occidentale, L. . - 
15. Procamelus robustus, Leidy, ‘ * | 34 Hipparion, S. Hippotherium speciosum, L. . . 
16. Procamelus gracilis, Leidy, . * | 35. Anchitherium Bairdi, Leidy, * 
— — i . ; * | 36. Anchitherium (Hypohippus) afinis, Leidy, . ‘ * 
% Merychyu a — ae * | 37. Anchitheriwm (Parahippus) cognat , Leidy, * 
* pete a 8 ee * | 38. Merychippus insignis, Leidy, Vd 
> y ee eee * | 39. Merychippus mirabilis, Leidy, . - 
