

Silurian. 













SriTjn A TJTsn^rTT^TT/ROTTS 





Carbon- 



o 





o 



, ^^,v..,.^.,. ..^ . IFEROUS. 



LoAver. Upper. 



p- 







i r- r 



i 1 ^ 



"D CD 



i -^ A — » 



i 





-3 



i 

 1 



Hamilton . 

 Upper Helde] 

 Oriskany . 



3 



9 ^ I 



f Upper 

 Burlington } 



( Lower 



8 



1 



Upper Coal . . . 



Lower Coal . . . 



' Kaskaskia . . . 



St. Louis .... 





^ : ^ : 1 : 









Is 



( Upper 

 ( Devonian 

 Eifel . . 



Grauwacke 



• 









• 9 ?^ 



g CD 50 O 



: i ill 



III 



V— V~ ~— V 







— 



-^ 





































Reteocrinidae. 





1 







■^ 



































Thysanocrinidae. 





























- 













Rhodocrinidae. 



"" 























^ 





CI 





» 





— 































Melocrinidae. 







► 



..... 



— 































Calyptocrinidae. 





m 



- 



















^^M 







•► 











Batocrinidae. 



I^^l 





HB 



^m 





im 



HH 



■^^■^^ 

































-^ 



^ 





m 













Actinocrinidae. 







— ' 



































Crotalocrinidae. 



1 



o 







as 















^ 





^ 





-— 









Platycrinidae. 



V 















^ 

























^^ 



IBB 



, 







^ 







Hexacrinidae. 

















^ 



^^ 









^ 









































Acrocrinidae. 

















— 































Cupressocrinus. 

 Myrtillocrinus. 



1 



i 









- 





« 





























- 



Haplocrinus. 



Symbathocrinus. 



AUagecrinus. 













"^ 























































Pisocrinus. 













— 



— 





































Hybocrinidae. 



i 



t-l 



- 





»- 



































Heterocrinidae. 





— 





































Anomalocrinidae. 









^^ 



































Calceocrinidae. 









^^ 







■* 





























•— 

















^^ 













Catillocrinidae. 

















^^ 





III 









































Belemnocrinidae. 















— 































Gasterocomidae. 



M 



^ 



m 



i 



m 















^ 





^ 













Cyathocrinidae. 



mm 



^ 













■n^n 

















- 



fl 



m 



I 



4 



N 



m 



i 



» 





Poteriocrinidae. 











- 



— .. 



























— 



Codiacrinidae. 



















■ 



































— 









•— 





-* 



Encrinidae. 





































-^ 





Astylocrinidae. 









— 

































Zophocrinus ? 







^ 



■ 

















^^ 



^H 







^ 



— 





Ichthyocrinidae. 



n 









w 



I 



'n 



r1 









• 









w 



W^ 



t> 



W 



CO 



W 

 o 



I— I 



p 



H 



w 



Q 

 O 

 O 

 I— I 



o 



P 



t?d 



O 



^^ 



H 

 W 



^ 

 O 

 N 

 O 



o 

 o 



HH 



c 



hH 



u 



02 



