STRATIGRAPHY OP FOSSILIFEROUS MEMBERS 65 



Squamularia perplexa (McChesney) 

 Composita subtilita (Hall) 



Leda bellistriata Stevens 

 Schizodus wheeleri Swallow 

 Acanthopecten carboniferous (Stevens) 

 Allerisma terminale Hall 

 Astartella varica McChesney 



Euphemus nodocarinatus (Hall) 

 Phillipsia trinucleata Herrick 



Exposures, which also furnish excellent collecting, are found along 

 the Wheeling & Lake Erie Railroad embankment north of Rock 

 Cut. In the same locality the Boggs and Upper Mercer members 

 both are present, and the relation between the three strata can be 

 seen to the best advantage (Locality 28). 1 The fossils listed below 

 were obtained: 



Plantae 



Fusulina secalica (Say) 



Crinoid segments 



Fenestella limbata Foerste 

 Fenestella shumardi Prout? 

 Polypora sp. 

 Rhombopora lepidodendroidea Meek 



Orbiculoidea meekana (Whitfield) 



Derbya crassa (Meek and Hay den) 



Chonetes mesolobus Norwood and Pratten 



Productus cora d'Orbigny 



Productus semireticulatus (Martin) 



Pustula nebraskensis (Owen) 



Pustula pertenuis (Meek) 



Marginifera muricata var. missouriensis Girty 



Marginifera wabashensis (Norwood and Pratten) 



Spiriferina kentuckyensis (Shumard) 



Spirifer opimus Hall 



Squamularia perplexa (McChesney) 



Composita subtilita (Hall) 



Edmondia aspinwallensis Meek 



Posidonia sp. 



Parallelodon tenuistriatus (Meek and Worthen) 



Aviculopecten coxanus Meek and Wx>rthen 



Aviculopecten sorer Herrick 



Deltopecten occidentalis (Shumard) 



Acanthopecten carboniferous (Stevens) 



Crenipecten foerstii Herrick 



Euchondria neglecta (Geinitz) 



*See geologic section under discussion of the Boggs member, p. 42. 



3 G. B. 25. 



