Silurian Fossils. 7 



during early Cuyahogan times with lower ^Michigan, north- 

 ern Ohio, and western New York. 



At the old George W. Defenbaiigh quarry, southeast of 

 Kokomo, Indiana, at present owned by Wilbur Defenbaugh, 

 and run last by Charles Driggs, the following section is 

 exposed : 



Heavy bedded fossiliferous limestone 1 ft. 8 in. 



Chert, thin bedded, with ostracods 1 in. 



Thin bedded fossiliferous limestone 2 ft. 



Base of the brachiopod horizon. 



Darker layer of limestone 2 in." 



Thin bedded limestone 10 in. 



Heavier bedded limestone, but thinly laminated, 1 ft. 4 in. 



Thin bedded limestone 9 in. 



Darker limestone 3 in. 



Layer with merostomata. 



At the ?x[cReynold or Interurban quarry, in the south- 

 western corner of Kokomo, there is a much thicker exposure 

 of the upper or brachiopod horizon. Xo merostomata have 

 been found here. 



South of the center of Kokomo, within the town limits, 

 there is a deep quarry, covering a considerable area, where 

 merostomata are common at an elevation of three to three 

 and one-half feet above the base of the quarry. This belongs 

 to the lower thinly laminated part of the section, and the 

 richly fossiliferous brachiopod beds appear to be absent. The 

 base of the quarry must be at least thirty feet below the top 

 of the exposures, but no measurements were made. 



At the George W. Hawker quarry, now owned by \'ess 

 Guinn, a mile southwest of Kokomo, merostomata are said to 

 occur ten feet below the top of the quarry. At the Chafifin 

 quarry, they occur very low in the quarry, and about twenty 

 feet below the top. 



It is not improbable that several merostomata horizons 

 occur in the thinly laminated limestones of the Kokomo region, 

 and that different species occur at the dififerent horizons. No 



