ECARDIXES 

 Lingulidae Lingula 



Obolidae 



Discinidae 



Craiiiidac 



Trimerellidae 



Testicar 

 Productidae 



Strophomenidae 



Koninckinidae 

 Spiriferidae 



Atrypidae 

 Rhynchoiiellidao 



Terebratulidae 



Argiopidae 



Stringoceplialidae 

 Thecidiidae 



Lingulella . 

 Obolus . 

 Obolella . . 

 Kutorgina . 

 Liniiarssonia 

 Treiimtis 

 Si}>honotreta 

 Acrotreta . 

 Discina . . 

 Crania . 

 Trimerella . 

 Dinobolus . 



DINES 



Productns . 

 Clioiietes 

 Strophalosia 

 Orthis . . 

 Skenidium . 

 Clitambonites 

 Strophomena 

 Stropheodonta , 

 Leptaena 

 Orthothetes 

 Davidsonia . 

 Koninckina . 

 Koniiickella 

 Spirifera . 

 Spiriferina . 

 Cyrtia 



Syringothyris 

 Uncites . 

 Athyris . . 

 Meiista . 

 Ketzia 

 Atrypa . 

 Dayia 



Coelospira . 

 Rhynchonella 

 Stenochisma 

 Stricklandia 

 Conchidium 

 Terebratula . 

 Terebratulina 

 Waldheimia 

 Terebratella 

 Kingena . . 

 Magas 

 Centronella 

 Argiope . 

 Cistella . 

 Stringocephalns 

 Tliecidium . 

 Oldliamina . 



