85 



Talle showing approximaleli/ the known distribution of the chief groups of Brachiopoda in 



geological time — Contiuued. 



Cyrtina, Davidaon . 

 Nucleospira, Hall. . 

 Trematospira, Hall . 

 Eitzia, King . . . 

 Acambona, White . 

 Charionella, Billings 

 Pentagonia, Cozzens. 

 Vnc'.tjs, Defrance. . 

 Spinferina, D'Orbigny 



I Air hocoelvi, Hall . 



{.Martinia, M'Coy . 

 Syringothyris, Wincholl 

 Suessia, Deslongcliamps 

 Xcntzelia, Quenstedt . 



PORAMBONITIDiE . . 



Porajnbonitds, Pander 



Stuophomenid^. . 

 ? Iphidea, Billings . 

 Orthis, Dalman . . 

 Plutystrophia, King. 

 Bilobites, Liini6 . . 

 Brachyprion, Sbalcr. 

 Stropheodunta, Hall. 

 KUtambonites, Pandor 

 ? Skenidium. Hall . 

 Strcphomena, Blainville 

 Leptaena, Dalman . 

 Streptorhynchus, Kin 

 Hipparionyx, "Vannxem 

 Met:kella, White & St. John 

 ? Aulacnrhynchun, Dittmar 

 ? Amphielina, Laube . . 



Productidje 



Ghovxites, Fischer. . . . 

 Strophalosia, King . . . 



