310 



Report of the State Geologist. 



Above this bed the number of species and of specimens gradually de- 

 creases, the association in the shale for two or three feet above the A. spi?'i- 

 fwoides bed being as follows : 



s. Dark bluish shales. 

 Crustacea : 



6 Primitiopsis punctulifera. rc 



Pteropoda : 



13 



Tentaculites bellulus. r 





15 



Styliolina fissurella. rc 





Lamellibr 



auchiata : 





35 



Aviculopecten exacutus. 



r 



36 



Pterinopecten conspectus. 



r 



56 



Palaeoneilo fecunda. r 





58 



P. emarginata, rc 





Brachiopoda : 





70 



Lingula Leana. r 





79 



Pholidops Hamiltoniae. rc 





82 



Rhipidomella Vanuxemi. 



r 



87 



Orthothetes arctostriata.' 



rc 



91 



Stropheodonta perplana. 



r 



100 



Chonetes lepida. rc 





103 



Productella spinulicosta. 



r 



105 



Spirifer mucronatus. r 





116 



Amboccelia umbonata. r 





118 



A. spinosa. r 





121 



Athyris spiriferoides. r 





124 



Atrypa reticularis, r 





Gradually more and more of the species disappear and others become 

 exceedingly rare. At five feet below the Encrinal limestone the association 

 of fossils is as follows : 



t. Fissile shale. 



Crustacea: 



1 Phacops rana. r 



6 Primitiopsis punctulifera. rc 



