258 STRATTGRAPHIC CATALOGUE. 



Petalorhynchus distortus, St. John & Worthen. 

 Peltodus quadratus, St. John & Worthen. 

 Petalorhynchus pseudosagittatus, St. John & Worthen. 

 Physonemus falcatus, St. John & Worthen. 

 Polyrhizodus amplus, St. John & Worthen. 



littoni, Newberry & Worthen. 

 Poecilodus sancti-ludovici, St. John & Worthen. 

 Psephodus latus, St. John & Worthen. 

 Psammodus planus, St. John & Worthen. 

 Sandalodus crassus, Newberry & Worthen. 



spatulatus, Newberry & Worthen. 

 Stenopterodus parvulus, St. John & Worthen. 

 Tanodus pia3Quntius, St. John & Worthen. 



sculptus, St. John & Worthen. 

 Vaticinodus ? simplex, St. John & Worthen. 

 Xystrodus imitatus, St. John & Worthen. 



Kaskaskia. 

 Corals— 



Cleistopora typa ( Winchell ). 

 Zaphrentis chesterensis, Worthen. 



spinulosa, Edwards & Haime. 



cylindracea, Worthen. 



ECHINODEEMS — 



Agassizocrinus dactyliformis, Troost, 

 Arch£eocidaris norwoodi, Hall. 

 Cromyocrinus globosus (Worthen). 

 Echinodiscus kaskaskiensis (Hall). 

 Eupachycrinus maniformis (Tandell & Shumard). 

 Pentremites godoni, Defrance. 



obesus, Lyon. 



pyriformis. Say. 



sulcatus, Roemer. 

 Pterotocrinus chesterensis (Meek & Worthen). 

 Scaphiocrinus scoparius, Hall. 

 Zeacrinus magnoliseformis (Owen & Shumard). 



Crustaceans — 



Colpocaris chesterensis, Worthen. 



POLYZOANS — 



Anisotypa solida, Ulrich. 

 Archimedes laxus, Hall. 



swallovanus, Hall. 

 Batostomella nitidula, Ulrich. 

 Diplopora bifurcata, Ulrich. 

 Fenestella cestriensis, Ulrich. 



elevatipora, Ulrich. 



