220 



Parallelism of the Palaeozoic Deposits 



Lower Silurian. 



TABLE 



Of the species common to 

 Europe and North Amer- 

 ica and of the subdivision 

 of the palaeozoic forma- 



tion in which they occur. 



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50 



Upper Silurian. 



c 

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33 





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»T5 



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- N 



© 

 C 



o 



(I 



Terebratula Wilsoni. 

 " Koissyi. 



planosulcata 



Pentamerus oblongus. 

 " galeatus. 



Spirifer cyrtaena. 



sulcatus. 





■j: 



t> 



x 



p 



GO 



cS i c 



£ 2| a 



? - ^ 



3 



O 



CO 



03 



GO 



C3 



bo 



01 



o 



3 



CO 

 © 



£ 



i 



S 



^ 



3 



cc 



CO 



Q 



e 



S3 



Devonian. 



03 

 C 



o 



50 



~3 



c 



C3 



co 



it 



© i.a £ 



6 £ 



a 



— 



© 



Q 



© 



© 

 C 

 3 



C 



03 



CO 



© 



© 



s g 



3 x 



© 



s 



© 



s 



O. 00 



O 



M fa.g 



cS 

 GO 



C3 



=3 

 



oUlgljjWkjfe 



CS 



G 



S C 



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X 



GO 



"3 



2 

 c 



U co O O 



= o « 



£ 



J> CO 



0> 



7* 



(4 



M 



u 



u 



44 







u 

 M 

 M 

 M 

 M 

 14 



44 



(4 



it 



14 

 14 



44 



cnspus. 



bilobus. 



mucronatus. 



macropterus. 



cultrijugatus. 



heteroclitus. 



Verneuili. 

 lineatus. 

 striatus. 

 attenuatus. 



cuspidatus. 

 lynx. 

 Orthis testudinaria. 



44 elegantola. 



hybrida. 



stria tola. 



Verneuili. 

 umbonata. 

 crenisiria. 

 resupiuata. 



Michel ini. 



Leptaena depressa. 



" subplana. 



41 transversalis. 



u Dutertrii. 



44 laticosta. 

 Chonetes nana. 



earcinulata. 

 Prod uc tus snba< uleatus. 

 u semiretieuiatus. 

 44 cora. 

 44 Fleming!. 

 puncratus. 



eostatus. 



Hypanthocryi e« decorus 



I ulanies Nerei f 



I myites gothlandica. 



Fnngia gothlandica. 

 Poriiei interstmcfa. 



( Rtenipura escharoides. 

 Stromutupora conrentrica. 



A in plexus spinosr 



yathuuhylium nntratum. 

 Chaeietes peiropohianus. 



eapiilaris. 

 iMilinacyhiai, u 

 ornuhi . ls 



Pleurudyrtiara pmblem'm. 

 Tentaeolites ornatu«. 

 Graptc^ilea taring 



Pti;odictya lam lata. 



Total, 





44 



H 



44 









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* 



* 



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* 



J 





* 



J 



JJ C"? M 

 NO N 



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90 



© 



© 



© 

 © 



Lower 



iCarbVf 



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c 



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iT5 

 N 



} 



. 









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0"0, 3 1- 1 G 





* 



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£ 



© 



© 



CO 



CS 



o 



a- u 



o i> 



N N 



c 



cs 



ca 



C 



£ 



7) 



© 



© 



c 



03 

 x 



CO 



9 



si 



PS 



, 



O 



00 ^l 'S 



N iN « 





c 



-- 

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M 



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* 

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* 



4c 

 4c 



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 4s 

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OloU 1227 2 3l7 0'2 , 0|4 6 jiff. 1 18 - »» 'J^il 



I4II6I6 



