432 A, W. GRABAU THE SHERBURNE SANDSTONE 



If we, however, regard the whole of the Sherburne as still represented 

 in the Bradt Hollow section, then the three upper fossiliferous zones 

 (B% B^, and B* of Prosser) must be included in it. The highest of 

 these zones (B^), which lies about 75 feet below the red Oneonta shales^ 

 contains the following fauna :^^ 



1. Chonetes corona tus r 



2. Spirifer mucronatus rr 



3. Fterinea flahella r 



4. Actinopteria hoydi r 



5. Nuculites oMongatus v 



6. Bryozoans it 



Fifteen feet lower, in thin strata of bluish to green shales, the follow- 

 ing fauna occurs (Prosser's zone B*^) : 



1. Atrypa reticularis c 



2. Spirifer mucronatus rr 



3. S. granulosus rr 



4. Chonetes setigera rr 



5. Orthonota undulata c 



6. Nuculites oMongatus (small) c 



7. Palwoneilo constricta rr 



8. Grammysia Irisulcata rr 



9. Pterinopccten vertunmus rr 



Fifty feet lower are greenish and bluish shales lithicall}^ like the Sher- 

 burne shales, but alternating with slightly fossiliferous sandstones. 



Forty feet lower, or 160 feet below the lowest Oneonta bed, occur sand- 

 stones and richly fossiliferous shales with the following fauna (Prosser, 

 zone B*) : 



1. Spirifer mucronatus c 



2. )Sf. granulosus rr 



3. S. audaculus c 



4. Tropidoleptus carinatus r 



5. Chonetes coronatus r 



6. Camarotoechia sappho a 



7. C. congregata c 



8. Eunella lincldwni rr 



9. ProductelM sp. rr 



10. Palwoneilo constricta r 



11. Nuculites triqueter rr 



12. TelUnopsis suJ)emarginata rr 



13. Sphenotus truncata r 



14. Orthonota undulata v 



15. Goniophora hamiltonensis r 



16. Cimitaria elongata rr 



Prosser : Loc. cit., p. 243. 



