106 
ON THE GEOLOGY AND NATURAL HISTORY 
VERTICAL SECTION, continued. 
'S i 
Subdivisions. 
Localities. 
& £ 
S rX 
*42 O 
Light gray tine sand, with more or less calca- 
Old Woman’s creek; also in many lo- 
reous matter, passing down into an ash-colored 
calities along the valley of the South fork 
< 
plastic clay, with large quantities of quartz grains 
of Shyenne. Best development on Sage 
pq 
disseminated through it, sometimes forming aggre- 
and Bear creeks. Seen at several lceali- 
O 
g 
gated masses like quartzose sandstone cemented 
ties in the valley of White river. 
o 
.5 
with plastic clay; then an ash-colored clay with a 
O 
rH 
o 
hH 
greenish tinge, underlaid at base by a light gray 
O 
-*-> 
S 
o 
G 
C3 
EH 
and ferruginous silicious sand and gravel, with 
pinkish bands. Great quantities of silex in the 
form of seams all through the beds. Titanotherium 
Bed. 
O 
GO 
GO 
E> 
iri 
Cretaceous beds 5 and 4, with their usual litho- 
Exposed underneath the tertiary beds 
G 
c3 
logical characters and fossils. 
on the South fork of Shyenne and its 
o 
rH 
southern branches, also in White river 
E-i 
H 
PP 
o 
m 
o 
valley near its source. 
CATALOGUE OF ALL THE FOSSILS HITHERTO DESCRIBED, FROM THE TERTIARY FORMATIONS OF WHITE 
AND NIOBRARA RIVERS, WITH A TABLE SHOWING THEIR STRATIGRAFHICAL POSITION. 
RUMINANTIA. 
1. Oreodon gracilis, Leidy, 
2. Oreodon Culbertsoni, Leidy, 
3. Oreodon major, Leidy, . 
4. Agriochcerus major, Leidy, . 
5. Agriochcerus antiquus, Leidy, 
C. Poebrotherium Wilsoni, Leidy, 
7. Leptomcryx Evansi, Leidy, . 
8. Leptauchenia decora, Leidy, . 
9. Leptauchenia major, Leidy, . 
10. Protomeryx Haiti, Leidy, 
11. Merycodus necatus, Leidy, 
12. Megalomeryx Niobrahensis, Leidy, 
13. Merychochcerns proprius, Leidy, . 
14. Procamel us occidentalis, Leidy, 
15. Procamelus robustus, Leidy, 
10. Procamelus gracilis, Leidy, . 
17. Merychyus elegans, Leidy, 
18. Merychyus medius, Leidy, 
19. Merychyus major, Leidy, 
20. Cervus Warreni, Leidy, 
Beds in ascending order. 
A. B. C. D.E. P. 
. . * * * 
* * # 
* * 
* * 
* 
* * 
* 
* 
* 
* 
* 
* 
* 
* 
* 
* 
* 
* 
* 
Beds in ascending order. 
A. B. C. D.E.P. 
MULTUNGULA. 
21. Chceropotamus ( llyopotamus ) Americanus, L. * 
22. Entelodon Mortoni, Leidy, .... 
23. Entelodon ingens, Leidy, .... 
24. Titanotlierium Prouti, Leidy, . . . * 
2G. Paleochccrus probus, Leidy, .... 
27. Leptocharus spcctabilis, Leidy, 
28. Rhinoceros occidentalis, Leidy, 
29. Rhinoceros ( Ilyracodon ) Nebrascensis, Leidy, 
30. Rhinoceros crassus, Leidy, .... 
31. Mastodon (Tetralophodon) merificus, Leidy, . 
32. E/ephas ( Euelephas) imperator, Leidy, 
* * 
* * 
* * 
* * 
* * * * 
* * * * 
* 
* 
* 
SOLIDUNGULA. 
33. Hipparion, S. Hippothcrium occidentals, L. . 
34. Hipparion, S. Hippotherium speciosum, L. . 
35. Ancliitherium Bairdi, Leidy, ... * 
3G. Ancliitherium (Hypohippus) affinis, Leidy, . * 
37. Ancliitherium ( Parahippus) cognatus, Leidy, * 
38. Merychippus insignis, Leidy, 
39. Merychippus mirabilis, Leidy, 
