LIST OF THE FOSSILS. 2 8l 



LIST OF THE FOSSILS. 



DEVONIAN. 



MIDDLE DEVONIAN. 



Cyathophyllum caespitosum (Goldfuss) Meek. 



Cyathophyllum arcticum Meek. 



Cyathophyllum (sp?) 



Cystiphyllum americanum var. arcticum Meek var. 



Spirifer sublineatus Meek. 



Cyrtina hamiltonensis Hall. 



Atrypa reticularis Linnaaeus. 



Atrypa aspera Schlotheim. 



Pentamerus comis Owen. 



Nevvberria lsevis Meek. 



UPPER CRETACEOUS. 



LARAMIE. 



Unio (sp?) 



Viviparus prudentius White. 



Physa copei var. canadensis Whiteaves.* 



*This last species is scarcely distinguishable from Bulimus disjunct us 

 White. 



