436 H. F. Bain — Limestone at Bethany, Missouri, 



3. Shale, with bituminous horizon and at many points a 



thin black limestone 3-8 



2. Shales, sandy, light-colored, very variable thickness ___ 2-16 



I. Limestone, fragmental, made up of irregular bits of 



lime rock filled in with calcareous clay. In places the 

 rock can be picked to pieces with the fingers ; else- 

 where it hardens up into massive thick-bedded layers. 

 Along a small tributary of Deer Creek in Guthrie 

 County it is quite fossiliferous, yielding Spirifer line- 

 atas, Spirifer cameratus, Athyris subtilita, Hustedia 

 mormoni, Productus longispimis, JVaticopsis alto- 

 nensis, Lopophyllwn proliferum, Orthis pecosi, Belle- 



rophum sp., Strap)harrollus sp., Archoeocidaris sp 10-15 



The Earlham limestone in Madison County is one of the best 



developed and most easily recognized members of the section. 



At Robertson quarry, two miles east of Earlham, the following 



section was noted : 



Feet. Inches. 



I I. Bed of soft, yellowish, magnesian, earthy lime- 



stone, decomposing readily when exposed to 



weather 4 



10. Limestone in three heavy ledges at west end of 



quarry 4 



9. Buff shale with Chonetes verneidianus 4 



8. Limestone, like number 4 , .. 2 



7. Ashen shale with very few fragments of brachio- 



pod shells - 6 



6. Earthy limestone, decomposing readily, yellowish, 



carrying large individuals of Athyris subtilita.. 4 



5. Drab shale, with Productus longisinnus, P. cos- 



tatus, crinoid stems and fragments ol other fossils 6 



4. Quarry limestone, in thin layers, irregularly 



bedded 8 



3. Unexposed _ _. 20 



2. Sandstone, in heavy layers 7 



1. Base of sandstone to creek, unexposed 17 



At one point the quarrymen had worked down in the bot- 

 tom of the quarry and exposed, below number 4, drab and 

 black shales to the depth of three feet, and below the shales a 

 ledge of limestone six inches in thickness. 



Distributed through the limestone beds No. 4 are the fol- 

 lowing : 



Lopophyllum proliferum McChesney. 

 Stem segments and body plates of crinoids. 

 Various species of Bryozoa. 

 Meekella striatocostata Cox. 

 Productus punctatus Martin. 

 P. costatus Sowerby. 



