GEOLOGIA HISTÓRICA 



Slreplorlujnchus hallianus Derby. 



n {Derbya) correianus Derby. 



,. (Orlhothetes) tapajolensis Dorby. 



Choneles amax-onica Drrby. 



» (jlabva Geinilz. 

 Strophalosia cornelliana Derby. 

 Vroductus semiroiiculalus Marlin. 

 .) cora d'Orbigny. 



chandlessi Derby. 

 i> batesianus Derby. 

 » rhomeanus Derby. 



ivallacianus Derby. 

 .. clarkianus Derby. 

 » nebrascenús Owen. 

 •) pnnctatus Marlin (?). 



Lamellibuaivchios 



Eatolíum auiculatum Swallow ("?). 

 Lima rectifera Schmnard. 

 Auiculopecten occidentalis Schumard. 

 1) carboniferus Stevens. 



» neglectus Geinitz. 



» fo.ra?ius Meek e Worthen. 



» {Streblopteria ?) herlxeri Meek. 



Auknla sp (eonipare-se A. longa Geiniii). 



(fompare-se Bakewellia bicarinata King). 

 ( „ .) . parva Meek e Wortlien). 



„ ( „ » sedgwickiana Kini;). 



Pinna pevacula Schumard. 

 Myalina kansasensis Schumard. 

 Macrodoii tenulinealus Meek e Worlhen (;/). 

 Schizodus wheeleri Swallow (?) . 



rossicus de VerneuilC?). 

 Pleurophorns tropidophorus Meek ('?). 

 Allorisma subciineala Meek e Worlhen. 



Gasteropoda 



Plevrolomaria speciosa Meek e Worlhen. 

 » marcouana Geinitz (■?) 



conoides Meek e Worlhen (?). 

 I. (compare-se P. subdecussata (ieinilzi. 



( u P. depressa Cox). 



Naticopsis nana Meek e Worlhen. 



31. 



