STRATIGRAPHY OP FOSSILIFEROUS MEMBERS 71 



lighter in weight than the shaly dark blue limestone. They are ex- 

 tremely fossiliferous, but the fossils are, as a rule, not so well preserved 

 as in the blue limestone." The species listed below were collected 

 from loose blocks on the hilltop (Locality 46) : 



Lophophyllum profundum (Milne-Edwards and Haime) 

 Crinoid segments 



Fenestella limbata Foerste 

 Polypora fastuosa Foerste 

 Septopora biserialis var. gracilis (Meek) 

 Rhombopora lepidodendroidea Meek 

 Streblotrypa merceri n. sp. 

 Cystodictya carbonaria (Meek) 

 Prismopora sereata (Meek) 



Orbiculoidea meekana (Whitfield) 



Orbiculoidea missouriensis (Shumard) 



Rhipidomella pecosi (Marou) 



Derbya crassa (Meek and Hayden) 



Derbya robusta (Hall) 



Chonetes mesolobus Norwood and Pratten 



Productus cora d'Orbigny 



Product/us semireticulatus (Martin) 



Pustula nebraskensis (Owen) 



Pustula pertenuis (Meek) ? 



Pustula punctatus (Martin) 



Marginifera muricata var. missouriensis Girty 



Marginifera wabashensis (Norwood and Pratten) 



Spiriferina kentuckyensis (Shumard) 



Spirifer cameratus Morton 



Spirifer boonensis Swallow ? 



Spirifer opimus Hall 



Squamularia perplexa (McChesney) 



Composita subtilita (Hall) 



Solenomya radiata Meek and Worthen 



Edmondia aspinwallensis Meek 



Edmondia meekiana (Herrick) ? 



Edmondia ovata Meek and Worthen 



Nucula beyrichi von Schauroth 



Nucula elongata n. sp. ? 



Leda bellistriata Stevens 



Leda meekana Mark 



Yoldia stevensoni Meek 



Parallelodon carbonarius (Cox) 



Parallelodon obsoletus (Meek) 



Parallelodon sangamonensis (Worthen) 



Parallelodon tenuistriatus (Meek and Worthen) 



Pteria ohioense (Herrick) 



Myalina pernaformis Cox 



Myalina swallovi McChesney 



Schizodus affinis Herrick 



