530 Raymond — Succession of Faunas at Levis, P. Q. 





A 



B 



C 



]) 



Crustacea. 

 Agnostus orion Billings 



1 



2 



3 



1 



X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 



2 



A. sidenbladhi Linnarsson 















Slmmardia granulosa Billings 















S. pusilla (Sars) 















S. sp. iiov _ 















Endymionia meeki Billings 















Holometopus angelini Billings 















Triarthrus sp. ind.. 





" 











"Arionellus" subclavatus Billings 







X 









Symphysurus elongatus Moberg and Segerberg. 

 S. sp. ind 











X 



X 

 X 

















Isotelus sp. ind. 

















Caryocaris c nrvilatus Gurley ._ __ 









X 







Ostracoda . . 







X 



X 



X 

 X 





X 





Graptolites which can be located in the section 

 from the associations given by Hall. 



Dendrograptus divergens Hall 













D. erectus Hall 















D. gracilis Hall 















D. diffusus Hall 













X 



Callograptus elegans Hall _ 







X 











Dictyonenia murra yi Hall 



X 

 X 

 X 













D. quadrangularis Hall 















D. robusta Hall 















Ptilograptus geinitzianus Hall 





■ J 



X 



X 











P. plumosus Hall _ . 















Clonograptus rigidus (Hall) 



Loganograptus logani Hall 



X 















X 

 X 

 X 

 X 



x 











Dichograptus octobrachiatus (Hall) 









Tetragraptus similis (Hall) 









T. denticulatus (Hall) 















T. quadribrachiatus (Hall) 









T. serra (Brongniart) 







X 









Didymograptus arcuatus (Hall) _ 







x 









D. bifidus (Hall) 







X 

 X 



X 



X 









I). constrictus (Hall) 















D. extensus ( Hall) 















D. nitidus (Hall) 







X 









D. pennalatus (Hall) . 









D. similis (Hall) 







X 









Phyllograptus ilicif olius Hall 







X 









Diplograptus inutilis Hall . 













X 



Trigonograptus ensiformis (Hall) 















X 

















X 



Retiograptus tentaculus (Hall) 







... 









X 



" Graptolithus " extenuatus Hall 















X 



Graptolites from Ami's lists. 

 Goniograptus thureani McCoy 



X 

 X 

















































X 



































