E. 21. Kindle — Section at Cape Thompson, Alaska. 525 



Lot U D\* 



Lithostrotlon sp. A. 

 sp. C. 



Zaphrentis sp. 

 Pentremitesf sp. 

 Fenestella sp. 

 Polypora sp. 

 Hemitrypa sp. 

 Cystoclictya f sp. 

 Productus aff. setiger 



" " vittatus 



" " cestriensis 



" " burlingtonensis 



" " pileiformis 



" sp. 

 Phipidomella f sp. 

 Derby a f sp. 

 Camarotoechia sp. 



Rynchopora sp. 

 Dielasmaf sp. 

 ? sp. 

 " turgidum ? 



Spirif'er aff. tieglectus 



" " subcardiiformis 



a a 



igelaius 



" " rostellatus 



Martinia? sp. 

 Spiriferina aff. subelliptica 

 Athyris aff. incrassata 

 Clothyridina hirsuta f 



ii roissvi 



Eumetria marcyi f 



" f n. sp. 

 Ilnstedia? n. sp. , 



Platyceras sp. 

 Griffithides? sp. 



. While some of the collections are much less numerous than 

 others, it is probably safe to refer them to a single fauna, 

 which is without much question of lower Carboniferous or 

 Mississippian age. It is true that some of the forms appear 

 to be allied to species in the Burlington and Keokuk of the 

 Mississippian section, but I believe that the beds furnishing 

 these fossils should correlate only with the upper Mississippian. 

 Indeed, the faunas are especially suggestive of the well-known 

 fauna of Spergen Hill, which is known to have been rather 

 extensively distributed toward the northwest. 



I have long been of the opinion that our upper Mississippian 

 correlates in a general way with the Mississippian limestone of 



* D 1 represents the uppermost 100' of division d of the section. 



Am. Jour. Sci.— Fourth Series, Vol. XXVIII, No. 168.— December, 1909. 

 35 



