Leptjena, Dalman, 
Rafinesquina, - 
Stropheodonta, Hall, - 
Pholidostrophia, - 
Leptostrophia, - 
Brachyprion, Shaler, 
Douvillina, CEhlert, - 
Strophonella, Hall, - 
Amphistrophia, - 
Leptella, - 
Plectambonites, Pander, 
Christiania, - 
Lept^nisca, Beecher, 
Davidsonia, Bouchard, 
Chonetes, Fischer, - 
Anoplia, - 
Chonetina, Krotow, 
Chonostrophia, - 
Chonopectus, - 
Chonetella, Waagen, 
Strophalosia, King, 
Daviesiella, Waagen, 
Aulosteges, von Helmersen, - 
Prodiictus, Sowerby, - 
Productella, Hall, 
Marginifera, Waagen, 
Proboscidella, CEhlert, - 
Etheridgina, CEhlert, 
Middle Devonian of Europe. 
Permian of Russia. 
Upper Carboniferous of India. 
Coal Measures of Europe. 
Coal Measures of Europe. 
