124 



SMITHSONIAN INSTITUTION 



Geological and Geographical Distribution 



Number of known species 



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



Formation 



Lecanocrinidae 



u 



a 



O 



American 



Approximate 

 European 

 Equivalents 



en 

 3 



c 

 'V. 



V 



o 

 c 



OJ 



<J 

 <u 



J 



en 



3 



a 



'u 



o 

 o 



"c3 



E 

 o 



en 



3 



c 



'0 

 CJ 



"3 

 u 



en 



3 



.5 

 i- 

 cj 

 o 



en 



'2 



< 



en 



3 

 C 

 'C 

 u 

 o 



a 



In 



o 

 X 



en 



3 

 C 



'£ 

 u 



_o 



"o 



o 



en 



3 

 'C 



CJ 



O 

 JS 



a 



rt 

 en 



< 



3 

 (J 

 (J 

 rt 

 en 

 O 

 C 



CJ 



>> 



r/1 



.5 



(J 

 o 



"H. 



OJ 



to 

 3 

 C 

 'u 



CJ 



o 

 l- 



eu 



o. 



"3 

 o 



3 

 O 



u 



<D 



'5 

 o 



.O 

 1- 

 n] 



u 























I 



3 

 (I) 



2 



I 

 I 



9 



Lower Burlington 



/Mountain 

 1 limestone 





















































C 



2 

 'c 







> 



Q 





Upper 



Middle 

 Lower 























5 



Hamilton 

















I 

 I 









(I) 



I 



(I) 





































c 

 a 

 'u 

 _3 



IS) 



Niagaran 



Wenlock 



6 



(5) 







2 



(3) 



i 



(2) 



(ij 



4 



5 

 (3) 







40 





(3) 



(5) 









American species 



29 



(25) 



7 

 (7) 







2 



(3) 



I 



(2) 



(i) 



4 



7 

 (3) 



6 



(i) 



2 





European species 



(3) 



(5) 





54 



14 



3 



5 



5 



3 



i 



4 



IO 



7 



2 



54 





