SHUMARD—CRETACEOUS STRATA. 585 
No. 8. Slope with beds of yellowish, soft, coarse-grained lime- 
stone, projecting at intervals. Some of the layer 
are More or less SiliCiOUS ++++++ sessse secesee seevee 77 feet. 
‘ ‘ “ 
9. Slope o eeecee 90000 pesaee ve 
“10. Light yellowish earthy limestone, appearing at intervals 
slo oe eecees 
eeee see eeee 2 eee @e ee eee ee eee 87 “ 
“IL. Light cream-colored, subcrystalline limestone ++++++++++« My dd 
rr 12. Slope eeeee SP Oe eee eee eee tee eee eee Se eee eee Hee eee e ee 5 “ 
“18. Very similar to No. 11, but of a more granular texture-»» 3 “ 
“14. Light, yellow, soft, chalky limestone, abounding in Gry- 
pha, Rostellaria and Arca eseees sesees \ sees sen Be Sead 
bid 15; Same as O. Lice esas eeses FOO O ee eee eee eeee HEREOF HHee in. 
“16. Light yellowish, sandy and compact limestone, projecting 
In benches from slope ++s+0s soscss seccse veces sees ++ 69 feet. 
“17. Rough, earthy, silicious limestone -++++ oseeee On ie 
The best exhibitions of this formation that we have seen 
are at Comanche Peak, Shovel Mountain, and at Mount 
Bonnell, near Austin. ' 
Fossils.—This group is remarkably rich in organic remains, 
a large proportion of them, however, occurring usually as 
s. The species most frequently observed are: Exogyra 
na, Gryphea Pitcheri, Janira occidentalis, Cardium 
multistriatum, C. Texanum, C. Coloradoense, Pholadomya 
Sancti-Sabe, Lima Wacoensis, Arcopagia Texana, Tri- 
bula occidentalis, Modiola concentrice-costellata, Leda, , 
monites acuticarinatus, A. pedernalis, Scolaria 
, Phasianella tumida, Rostellaria (Hulima, Sh.) sub- 
Susiformis, Natica pedernalis, Nerinea acus, Avellana Tex- 
and, Turritella seriatim-granulata, Cerithium Bosquense, 
Pleurotomaria (undet. sp.), Solarium (undet. sp.), Heteraster 
( Towaster, Roe.) Texanus, Holectypus planatus, Cyphosoma 
Texanum, and Diadema Texanum. — si Sag 
It is quite probable that this and the preceding gna 
y our Cretaceous System are not represented in Nebra 
Bd have collected more tha fty species of fossils from 
ese 
e New Jersey and Alabama series, though it is not im- 
probable hat a closer study of the Cretaceous rocks in la- 
“ma will show them to exist there. 
Glarea Livestonz.—This subdivision consists of aye 
logi en and bluish earthy limestone, and resembles in litho- 
eral features portions of the preceding group, but contains 
different assemblage of organic remains. Some of 
3 
® 
others are moderate] hard, and furnish a handsome building 
Tock, which may be “idk into almost any required shape with 
