146 PROCEEDINGS OF THE ACADEMY OF [1895. 



Whether these limestones form a connected bed throughout the 

 whole length of the area is not known. They occur about twelve 

 miles further south at Kemp where they contain Cucullcea macro- 

 donta Whitf, Cytherea sp., Turritella alabamensis var. prealaba 

 Con., and Mesalia alabamensis Whitf. 75 



In the vicinity of Tehuacana, Limestone county, these limestone 

 beds again make their appearance with an increased thickness. Here 

 the beds form the surface over considerable areas and are underlaid 

 by a brownish gray sand presenting the following section : 



1. Whitish to grayish white limestone containing 



Ostrea alabamensis Lea., Vol uti tithes sp., 

 Venericardia, planicosta Lam., Cytherea sp. , 

 Mesalia alabamensis var. medvia n. v. 

 Harris, Turritella multilira Whitf, and 

 T. alabamensis var 40 feet. 



2. Brownish gray sand changing to a brown near 



base — 



3. Black shaly clay (Cretaceous) — 



These limestones are again seen at Hornhill in the same county 

 where they carry practically the same fauna and the Brazos section 

 is seen in the following : 



(a.) Section at Oyster Bluff (Penrose), Two Miles Above Mouth of 

 Pond Creek : — 



1. River alluvium 4 feet. 



2. Conglomerate 2 " 



3. Coarse conglomerate with boulders l£to2 " 



4. Thinly stratified yellowish gray clay, sand and 



blue clay with occasional rounded boulders 



of calcareous sandstone 10 " 



5. Blue laminated clay, fossiliferous 4 " 



6. Thin bed of nodules and hard fossiliferous lime- 



stone 1 foot. 



7. Thinly laminated gray clay and sand .... 3 feet. 



8. Bluish gray sand 1 foot. 



9. Thinly laminated dark blue clay and sand . . 3 feet. 

 10. Dark blue laminated and fossiliferous sand . . 2 " 



The fauna belonging to this section comprise Ostrea prcecomjpressiros- 



75 Harris MSS. 



