246 STRATIGRAPHIC CATALOGUE. 



Hudson. 



Glyptocrinus fornshelli, Miller. 

 Acidaspis halli, Shumard. 

 Cyphaspis girardeauensis, Shumard. 

 Encrinurus deltoideus, Shumard. 

 Leptsena mesacosta, Shumard. 



sericea, Sowerby. 

 Orthis emacerata, Hall. 



missourienBis, Shumard. 



subquadrata, Hall. 



tricenaria, Conrad. 

 Platystrophia acutilirata (Conrad). 

 Plectambonites rhomboidalis (Wilckens). 

 Ehynchonella capax (Conrad). 



dentata (Ball). 

 Streptorhynchus iilitexta (Hall). 

 Strophomena alternata (Conrad). 



planumbona (Hall). 

 Tentaculltes incurvus, Shumard. 



"Niagara." 



Striatopora missouriensis, Meek & Worthen. 

 Favosites favosa (Goldfuss). 



hemispberica (Troost). 

 Edriocrinus pocilliformis, Hall. 

 Acidaspis hamata (Conrad). 

 Calymene rugosa, Shumard. 

 Dalmanites tridentifera (Shumard). 

 lllsenus graftonensia, Meek & Worthen. 



insignis, Hall. 

 Lichas boltoni (Bigsby). 

 Eatonia pecularis? (Conrad). 

 Meristella Isevis (Vanuxem). 

 Nucleospira pisiformis, Hall. 

 Orthis subcarinata, Hall. 

 Spirifera perlamellosa (Hall). 

 Streptorhynchus subplana (Conrad). 

 Trematospira imbricata? (Hall). 

 Zygospira subconcava, Meek & Worthen. 

 Capulus subsinuosus (Worthen). 

 Igoeeras pyramidatum (Hall). 

 Orthonychia spirale (Hall). 

 Orthoceras medullare, Hall. 



jolietense, Meek & Worthen. 



