Black Shale of Eastern' Kentucky. 393 



Prioniodus armatus Hinde. 

 Fig. 4. p. 395. 



Prioniodus armatus Hinde, 1879. Quart. Geol. Soc. London, 

 vol. xxxv, p. 360, pi. 15, figs. 20, 21. 



A single Conodont answering in every particular to Hinde's 

 description of Prioniodus armatus and very probably referable 

 to that species. There is one large terminal main tooth and 

 eight proximate smaller denticles, one of which is more or less 

 adnate to the larger one. The latter extends almost twice as 

 far above the basal portion, which is narrow and slightly curved, 

 as the denticles, and is prolonged downward into a spur about 

 as far as they are long. The main tooth is, of course, not only 

 longer but also much stouter than the others. Its downward 

 spur-like extension is mentioned by Hinde, but exists to a more 

 marked degree in the specimen described than in either of 

 those figured by him. The denticles also are more crowded 

 together, more as in his fig. 20 than as in fig. 21. This species 

 was originally described from the G-enesee period from erratic 

 boulders found near Port Stanley, Lake Erie, Ontario, and from 

 the Genesee shale at North Evans, New York. So far as I am 

 aware it is restricted to rocks of that age. 



Locality and position. At the base of the Devonian black 

 shale, supposed to belong to the Genesee period, near Indian 

 Fields, Clark Co., Kentucky. 



Sporangites Huronensis Dawson ? 



Sjporangites Huronensis Dawson, 1871. This Journal, III, i, 

 p. 257. 



Minute spore cases are plentifully distributed throughout 

 the material examined. They seem to agree in every particu- 

 lar with authentic specimens of Sjporangites Huronensis except 

 for being a trifie smaller. This species was described from a 

 black shale exposed at Kettle Point, which is supposed to 

 represent the Genesee shale of New York. 



I am indebted to Mr. David White of the IT. S. Geological 

 Survey for suggestions leading to the identification of this 

 species. 



Locality and position. From the base of the Devonian black 

 shale, supposed to belong to the Genesee period, near Jefferson- 

 ville, Montgomery Co., Kentucky, also near Indian Fields, 

 Clark Co., Kentucky. 



