Fig. 



1. 



Fig. 



9 



Fig. 



3. 



Fig. 



4. 



• PLATE XXII. 



PAGE_ 



I/INGULA (SCOTICA var.) WAVERLIENSIS Herrick 508 



111 shale immediately above conglomerate II at Newark, O. 



Lingula gannensiS Herrick. 

 Knox county, O.- middle Waverly. 



Ventral valve of same species. 



LiNGULA MEMBRANACEA Winchell. 

 Sixty feet above conglomerate II, near Loudonville, O. 



Figs. 5-6. Lingula atra Herrick. 



Ventral and dorsal valves. Near junction of the Cuyahoga with Little Cuyahoga 

 river. Lowest part of Cuyahoga or Berea shales. 



Figs. 7-8. LiNGULA MEEKI Herrick. 

 Locality and position as above. 



Fig. 9. Lingula Cuyahoga Hall. 



Locality and position as above. 



Fig. 10. Lingula melie Hall. 



Locality and position as above. 



Fig. 11. Orbiculoidea NEWBERRYI Hall. 

 Locality and position as above. 



Fig. 12. Orbiculoidea pleurites Meek. 



Shale above conglomerate II, Newark, Gann and Loudonville. 



Fig. 13. Orbiculoidea newberryi Hall. 



Cuyahoga or Berea shale. 



Fig. 14. CrenipECTEN cancellaTus Herrick. 

 Cuyahoga shale, Moots' run and northern Ohio. 



Fig. 15. Pterinopecten laetus Hall. 

 Cuyahoga shale, Moots' run. 



Fig. :6. Pterinopecten cariniferus Herrick. 



A left valve without the usual sinus beneath the ear. Cuyahoga shale. 



Fig. 17. Allorisma Cuyahoga Herrick. 



Flags below the lower falls ot the Cuyahoga river, near base of the Cuyahoga shale. 



Fig. 18. Edmondia sulcifera, Herrick. 



Small specimen from Cuyahoga shale at Cuyahoga^ Falls. 



Fig. 19. Entolium aviculatum H. 



Cuyahoga shale. The two valves are almost in their natural relation, the upper 

 one upper one having been broken away to show the interior of the opposite 

 valve. 



Fig. 20 Edmondia sulcifera Herrick. 



Hinge view. 



Fig. 21. Entolium aviculatue H. 



Right valve. 



Fig. 22. Pterinopecten ashlandensis Herrick. 



Cuvohoga shale, near Ashland. 



Fig. 24. Edmondia sulcifera Herrick. 



Cuyahoga shale. Licking county. 



Fig. 25. Solenomya ( ? ) Cuyahogensis Herrick. 

 Cuyahoga falls, 30 feet below conglomerate. 



Fig. 20. MACRODON sp. 



Cuyahoga shales. 

 Fig. 27. Lyriopecten nodocostaTus Herrick. 



Cuyahoga shales, Licking county. 



