— 
i) 
OF THE UPPER MISSOURI, 51 
Fee 
. Light grayish yellow, rather granular magnesian limestone, containing spines and plates of Archeoci- 
daris ; a few fragments of small Crinotd columns, Spirifer similar to S. lineatus, but perhaps distinct ; 
also same Spirigera seen in beds above, Orthisina Shumardiana, O. umbraculum? and Productus 
Calhounianus. Forms distinct horizon near summit of hills in vicinity of Fort Riley, also seen on 
Cottonwood creek, . , . ‘ : : ‘ ; "Tes 
13. Soft argillo-calcareous bed, spganaaly sick Lunes falls, ‘ ‘ 5 
14. Light grayish and yellowish magnesian limestone, containing many concretions of Aint, ati the same 
—_ 
on 
ho = beak rg — 
S aa) oe = oO 
bo bo 
a a, 
29. 
Spirigera found in beds above, and Productus Norwoodi, P. Calhounianus, with Discina tenuilineata 
and an undetermined Monotis. Fort Riley and below, also at Kansas falls and on Cottonwood creek, . 88 
. Alternations, bluish, yellowish and brown clays, with a few thin seams of limestone. Fort Riley, Kan- 
sas falls ; also below Fort Riley, and on Cottonwood creek, 35 
. Light yellowish magnesian limestone, containing Fucotdal markings, finale of ean Orinoid icine 
Pecten, Allorisma, Spirigera, Orthisina umbraculum ?, O. Shumardiana, Discina tenuilineata, Ke. 
Lower quarry at Fort Riley, and at other places above and below Fort nid as well as on Cottonwood 
creek, . : : . : 4 to 
. Alternations of blue, red, ait light ¢ gray on ick » sometimes thin _ wid seams of magnesian lime- 
stone. Fort Riley, . : 7 oe 
. Light gray and whitish magnesian anaisouds siping Si anes Orthisina sisbisloat. ?, O. “Shu. 
mardiana, Productus Calhounianus, Acanthocladia Americana, and undt. sp. Cyathocrinus. Lower 
part containing many concretions of flint. Fort Riley and on Cottonwood creek. Whole thickness about 40 
. Brown, green, and very light gray clays, alternating ; contains near the upper part fragments of Crinotd 
columns, Synocladia biserialis, Spirigera, Productus Norwoodi, Chonetes mucronata, Orthisina Shu- 
mardiana, Orthisina umbraculum, &ec., with teeth of Petalodus Alleghaniensis. Fort Riley, . . 14 
Alternations of rather thin layers of light yellowish magnesian limestone, and various colored clays; the 
limestone layers containing Monotis, Synocladia biserialis, &e. Locality same aslast, . ‘ . 33 
. Slope, no rocks seen. _ Below Fort Riley, a ‘ 95 
Whitish, or very light gray magnesian limestone, conderad: porous re cavities ss Ieft by the Weaklonci out 
of numerous Fusulina. This is the highest horizon at which any remains of Fusulina were met with. 
Some four miles below Fort Riley, along a creek on the south side of the Kansas, and apparently not 
more than ten feet above it, . d 4 P , are 
. Bluish, light gray, and brown clays, pK ps fee oe magnesian ae Chonetes mucro- 
nata, Orthisina uml lum 2, Monotis, Fusulina, &e. Ten miles below Fort Riley, ; 35 
. Hard, very light yellowish gray magnesian limestone, with Fusulina, and spines of deka ees 
Forms a marked horizon near the same locality as last, . ‘ 3 6 
. Slope, with occasional exposures, thin layers of Fusulina, limestone, a seams of gray sbasneatiad contain- 
ing Myalina, Monotis, Pecten, and fragments of Synocladia biserialis. Near same locality as last, . 36 
o 
. Light gray argillaceous limestone, showing on weathered surfaces a somewhat laminated stracture ; con- 
tains large spines of Archeocidaris. Near Ogden ferry and Manhattan, é 9 
. Gray limestone, often fragmentary, with much clay above; lower part hard, and more or tia ote in 
middle. Locality same as last, . 5 
Whitish clays and claystones, with a thin See of hard Gaga gray Wncstone ‘a near thi middle. iS 
‘ - ‘ , 10 
cality same as last, : é : 
Light greenish merece et Sees entiy, : . ; ‘ i ‘ ; . ’ ‘ 
