126 PROCEEDINGS OF THE ACADEMY OF [1895. 



interstratified and containing the above 



fossils 3 " 



4. Blue laminated clay in which no fossils were 



found, to bed of stream 2 " 



Small sections of a similar character occur on Elm Creek, near 

 Burckley Station and on the Wilson Reid Headright, both lying be- 

 tween Campbell's Creek and the Brazos River. 



Along the Brazos we have probably the most important and most 

 complete section of these beds. To the south we find them passing 

 beneath the Yegua clays about 500 yards south of the mouth of the 

 Little Brazos. Thence throughout a succession of bluffs we can 

 trace the Marine beds northward to their contact with the underlying 

 lignitic a short distance north of International Railway bridge, a 

 direct distance of twelve miles. The section showing the contact be- 

 tween the Yegua clays and the Marine beds has already been given, 

 and the next section, that on the Little Brazos, near the iron bridge, 

 on the Moseley's Ferry and Bryan road shows: 



1. Chocolate brown clayey soil, river deposits . 10 to 15 feet. 



2. Gravel 2 to 4 " 



3. Laminated unfossiliferous clay 4 " 



4. Pale blue unfossiliferous clay 1 to 3 " 



5. Thinly laminated blue to black colored clay 



containing Terebra houstonia, Harris, 

 Terebra texagyra var. Harris, Conns 

 sauridens Con., Pleurotoma ; Pleurotoma 

 (Surcula) gabbii Con., Levifusus trabea- 

 toides Harris, PL (Surcula) moorei, Gabb, 

 PL (Drillia) nodocarinata Gabb, PL 

 terebrceformis Mr., PL (Mangelia) in- 

 significa Heilpriu, PL (Drillia) texaeona 

 Harris, PL (Drillia) penrosei Harris, 

 Ancilla (Olivula) xtaminea Conrad, 

 Ancilla andllops Heilprin, Nucula 

 magnifica Con. , Leda opulenta Con. , 

 Pseudoliva vetusta var., P. vetusta var. fusi- 

 formis Con., Volutilithes pelrosa Con., 

 V. precursor Dall, Latirus moorei Gabb, 

 Tellina mooreana Gabb, Dentalium 



