scHucHERT.] REPRESENTATION OF THE ORDERS AND FAMILIES. 



25 



Table II. — North American Paleozoic representation of the orders, snperfamilies, and 



families, geologicallij arranged. 



Order, superfamily, and family. 



Order Atremata '. 



Superf. Obolacea 



Fam. Paterinidfe 



Obolida* 



TriinerellidfB 



Super!'. Lingulacea 



Fam . LingulellidiR 



Lingnlidse 



Lingulasmatidse . 



Order Neotremata 



Superf. Discinacea 



Fam. TrematidfB 



Discinidse 



Acrotretidae 



Siphonotretidse . 



Superf. Craniaeea 



Fam . CraniidsB 



Order Protremata 



Superf. Thecacea 



Fam. Kutorginida? 



Eichwaldiidse . . . 

 Billingsellidie . . . 

 StrophomenidcB . 



Productidffi 



Orthidie 



Superf. Trullacea 



Fam. Clitambonitidae . 

 SyntropliiidPB ... 

 Porambonitidse . . 



Pentameridae 



Order Telotremata 



Superf. Ilostracea 



Fam. Protorhynchidse 

 RbynchonellldsB . 



Superf. Terebratulacoa 



Fam. Centronellidffl ... 

 TerobratulidoB .. 

 Tropidoleptiidfe . 



Superf. Spiriferacea 



Fam. AtrypidsB 



Spiriferidae 



AthyridiB , 



o 

 u m 



ii 



'A 



196 



43 



8 



17 



20 



153 



35 



113 



5 



153 



99 



24 



50 



16 



7 



5-t 



54 



735 



608 



1 



6 



12 



211 



186 



192 



127 



9 



7 



24 



87 



762 



197 



3 



194 



79 



30 



47 



2 



480 



45 



278 



163 



o 



s 



3 



bli 



19 

 9 

 1 

 4 

 4 

 10 

 4 

 4 

 2 

 21 

 18 

 4 

 5 

 5 

 3 

 3 

 3 



02 



45 



1 



2 



1 



19 



9 



13 



17 



3 



1 



3 



10 



70 



14 



1 



13 



19 



8 



10 



1 



43 



8 



11 



24 



^ o 



57 

 22 

 82 

 16 ■> 



35 



286 

 7 



20 

 19 



1 

 155 



1 



1 



1 

 22 

 16 



1 



■^ a; 



o 



00 

 6 



3 



3' 

 54 

 93 



4114 



4' 

 44 

 30 

 17' 

 03 

 1> 

 0" 

 14 

 U* 

 173 

 1.52 



1 



2 

 65" 



20 

 18 

 1' 

 17 10 



31 



17 





30 



5.W.S 



"."2 3 

 c " - 



a s 



178 

 14 



13' 

 1 



21 

 8 

 2 

 6' 



30 

 11 

 29 5 



13 

 133 

 101 

 96 



5> 



1 

 48'" 



5' 

 37' 

 65 



1 



10 3 

 54 '2 

 109 

 37 



37 '2 

 1 



71 

 14' 

 24 '3 

 33"* 



42 

 20 

 2' 

 18^ 



22 

 22 ^ 



210 

 185 



23 5 

 369 

 94 



94 28 



50 

 265 

 22 " 

 2' 



225 

 18 



138 « 

 69" 



21 



21 



26 

 22 

 3' 

 198 



4 

 4' 

 179 

 169 



103 



269. 

 49 



49 » 

 30 

 42 



26' 



190 

 146 

 11535 



ei'-i 



