Report of the State Geologist. 



d. Two feet of shale less calcareous than c ; unevenly laminated. 

 AmbocceUa nmhonata has practically disappeared, while Atrypa 

 reticularis, Streptelasma rectum and Oystiphyllwm have become 

 abundant. 



Crustacea ; 



1 Phacops rana. rc. 



2 Cryphseus Boothi. r 



Gasteropoda : 



Platyceras sp. R 

 24 Platyostoma lineata. r 



Lamellibranchiata : 



36 Pterinopecten conspectus, r 



Brachiopoda : 



82 Rhipidomella Vanuxemi. r 



85 R. idoneus. R 



87 Orthothetes arctostriata. r 



92 Stropheodonta inequistriata. rc 



96 Chonetes mucronata. r 



97 C. deflecta, r 



120 Nucleospira concinna. r 



121 Athyris spiriferoides. r 

 12-4 Atrypa recticulai'is. c 

 125 A. aspera, R 



Crinoidea : 



139 Taxociinus sp. R 



140 Ancyrocrinus bulbosus and undetermined species, r 



Anthozoa : 



152 Streptelasma rectum, e 



153 S. ungula. r 



158 Cystiphyllum conifollis. c 



159 Amplexus Ilamiltonige. rc 



160 A. (?) intermittens, r 



161 Monotrypa fruticosa. rc 



Above these beds fossils become more and more scarce, Phacops rana 

 alone remaining; this finally disappears and the shale is practically barren 

 for about eight feet wherever examined. At Section E, in Eighteen-mile 



