DISTRIBUTION 



99 



Geological Distribution of the Flexibilia 



Number of species 



(Open figures indicate American, those marked ( ) European) 



o 

 G 



o 



American 



Approximate 

 European 

 Equivalents 



i rt 



(0 c 



u C 



V c 

 rt (j 



, u 



fcg 



-5 c 







1 " e 



o'c 



rt 



H 



c 



e 



c 



rt 

 tu 

 0, 

 



Ih 



3 



w 



"rt 

 O 

 H 



HO 



Ih 



u 











I 

















3 

 O 

 t-i 

 <u 



MH 



'S 



o 



•Q 

 Ih 



nj 



u 



Ih 



o 





Moscow 

 Hurlet 





2 



4 



2(1) 



1 



(2) 



I 



9(4) 

 1 



3 



(I) 



3 

 I 



9 



5(3) 

 7 



57 



(12) 



69' 















Burlington 



/Mountain 

 1 limestone 



8(1) 





c 



'5 

 o 

 > 



Q 





Upper 

 Middle 

 Lower 



id) 



2(1) 





(2) 



4(0 



3 



5 



5(2) 



1(6) 



21 



(13) 



34 







c 

 .2 



C/5 



Niagaran 



Wenlock 



18(22) 



2(8) 



4(7) 

 1 



3(5) 

 1 



29 



(42) 



7i 











C 



'> 

 o 



lH 



O 





Caradoc 









2 



2 





2 











29 

 (25) 



II 



(9) 



24 

 (16) 



45 

 (17) 



109 



(67) 













54 



20 



40 



62 



109 



(67) 



176 







