498 Lohley — Distribution of British Brachiopoda. 



The class Brachiopoda is represented ia British rocks by 47 genera 

 and siib-genera, of which a complete list is given in the following 

 table. The generic names are arranged in the order of the incoming 

 or earliest appearance of each genns, and the table shows the number 

 of species of each genus in each of the great groups of British strata 

 in which it has been found. The asterisks indicate the genera which 

 are living in the present seas of our globe. 



Genera. 



Lingulella , 



Obolella , 



Discinia , 



Orthis , 



Lingula 



Kutorgina 



Oholus 



Siphonotreta 



Leptana 



Strophomena 



Acrotreta 



Crania , 



Orthisina 



Meristella 



Ehynchonella 



Spirifera 



Pentamerus 



Stricklandinia .. 



Porantbonites 



Ghonetes 



Athyris 



Retzia 



Orbiculoidea 



Ntideospira 



StreptorhyncJms . 



Spiriferina 



Cyrtina 



Terebratula 



Merista 



Uncites 



Camarophoria 



Davidsonia 



Productus 



String ocephalus . . 



Rensselceria 



Strophalosia 



Thecidium 



Zellania 



Argiope 



Terebratulina . . .. 



Waldheimia 



Terebratella 



Megcrlia 



Tcrebrirostra 



Trigonoaemus 



Magas , 



3 



4 

 10 



45+7v. 



21 



1 



2+3v. 



2 



13 



21 



1 



7 



2 



7+lv. 



9 



18 



7+2v. 



7 



2 



2 



3 



3 



2-h2v. 



2 



1 



5+lv, 



15+lv, 

 19 



2 



4 



4+lv, 



2+? 



34-lv. 



1+lv. 



"3 

 "2 



2+3t. 



17+4V, 



23 



2 



3+2v, 

 8 

 4 

 1 

 1 

 2 

 1 



