85 



Tabic showing approximalelj the knonm 



gmlogica 



difitribiil'ion of the chief groups of Brachiopoda in 

 I time — Coutiuued. 



Cyrtina, Davidson . 

 Nudeospira, Hall. 

 Trematospira, Hall . 

 Bstzia, King . . . 

 Aeambona, White . 

 Chariomlla, Billings 

 Pentagonia, Cozzens. 

 Unc>,tjs, Defrance. . 

 Spvnferina, D'Orbigny, 

 ( An bocoelvi. Hall 

 ( Martinia, M'Coy 

 Syringothyris, Wincholl 

 Suessia, Deelongchamps 

 Mmtzelia, Quenstedt . 



POISAilBOXITIDiE . . 



Porambonites, Pander 



Sti:ophoiMENidj3. . 

 f Iphidea, Billings . 

 Orthis, Dalman . 

 Platystrophia, King. 

 Bilobites, Linn6 . 

 Brachyprlon, Shaler. 

 Stropheodonta, Hall. 

 Klitambnnites, Pandor 

 ? Skenidium, Hall . 

 Strcphomena, Blainville 

 Leptaena, Dalman . 

 Streptorhynchus, Kin 

 Hipparionyx, Vannxem 

 Mci'kella, White & St. John 

 .' AulacoThynchun, Dittraar 

 I Arnphiclina, Laube 



PliODUCTIU^ . , . 



Ckov^ten, Fischer. . 

 Strophalona, King . 



XXX 



