Wetter — Kinderhook Fanned Studies. 209 



lamellosa, Orlhis swallovi, Straparollus latus, and Igoceras 

 quincyense are all lower Burlington limestone species. Cleu- 

 topora typa which is identified with a query, is the same as 

 Leptopora typa of bed No. 7 at Burlington. As has been 

 pointed out by Keyes * this fauna is allied to that of the Bur- 

 lino-ton limestone. It is not, however, the Chouteau fauna, 

 and the bed containing it cannot be correlated with that 

 formation. 



In recent papers Keyes t has suggested the correlation of 

 the Chonopectus sandstone at Burlington with the Hannibal 

 shale of the Louisiana section. The paleontological evidence, 

 however, afforded by the same author, demonstrates the 

 Chouteau age of the Hannibal shales, and suggests their cor- 

 relation with the beds representing the Chouteau in the 

 Burlington section which lie altogether above the Chonopectus 

 sandstone. If such a correlation prove to be the correct one, 

 then bed No. 4 may be considered as a northern extension of 

 the Louisiana limestone as has been suggested in a previous 

 paper by the writer, t and the Chonopectus fauna may be 

 considered as being pre Louisiana in age. The fauna of bed 

 No. 4, however, contains little or nothing to suggest its cor- 

 relation with the Louisiana limestone. 



In a recent paper on the Carboniferous faunas of the Yel- 

 lowstone National Park, Dr. Geo. H. Girty § has drawn some 

 interesting comparisons between the fauna of the Madison 

 limestone of that region, and the Kinderhook faunas of the 

 Mississippi valley. He says,1f " Considering the fauna of the 

 Madison limestone as a whole, it can be pointed out that, of the 

 79 species known from this formation, 29 were described from 

 or have been identified in Kinderhook beds of Ohio, Michigan, 

 and the Mississippi Valley — that is, about 37 per cent of the 

 Madison limestone fauna consists of Kinderhook species." A 

 list of species follows and then he continues, " After making 

 the necessary deductions from this list, some of whose identi- 



* Trans. Ia. Acad. Sci. 4 : 26.— Trans. Acad. Sci. St. Louis. 1 : 357.— 

 Am. Geol. 20:167. 



t Jour. Geol. 8 : 315. — Am. Geol. 26 : 315. 



X Iowa Geol. Surv. 10 : 79. 



§ Monog. U. S. G. S. 32: 479-578. 



1 Loc. cit. p. 490. 



