BEEKMANTOWN AND CHAZY FORMATIONS OF CHAMPLAIN BASIN 



Suborder E. CYKTOCI IOAMTES 



Division I. ANNULOSIPHONATA 

 Family loxoceratidae 



Genus loxoceras McCoy 

 Loxoceras moniliforme Hall (sp.) 



Family actinoceratidae 



Genus cyrtactinoceras 



Cyrtactinoceras boycii Whitfield (sp.) 

 C. champlainense sp. nov. 



Genus gonioceras Hall 



Gonioceras chaziense sp. nov. 



Division II. ACTINOSIPHONATA 

 Family ooceratidae 



Genus ooceras Hyatt 



Ooceras kirbyi Whitfield (sp.) 



O. (?) raei Whitfield (sp.) 



O. seelyi sp. nov. 



O. lativentrum sp. nov. 



O. (?) perkinsi sp. nov. 



Family oncoceratidae 



Genus cyclostomiceras Hyatt 



Cyclostomiceras cassinense Whitfield (sp.) 

 C. minimum Whitfield (sp.) 



Genus oncoceras Hall 



Oncoceras pristinum sp. nov. 



Formae incertae sedis 



(Orthoceras) rectiannulatum Hall 

 (O.) repens Billings 

 (O.) catulus Billings 

 (O.) perseus Billings 

 (O.) missisqnoi Billings 

 (O.) cato Billings 

 (O.) cataline Billings 

 (O.) sayi Billings 

 (O.) xerxes Billings 

 (O.) tityrus Billings 

 (O.) aristides Billings 

 (Cyrtoceras) beekmanense Whitfield 

 (C.) confertissimum Whitfield 

 (C.) acinacellum Whitfield 

 (Lituites) imperator Billings 

 (Nautilus) pomponius Billings 



