Report of the State Geologist. 



13. Orikoceras (fragment ). (rr) 



14. Coleohis tenuicinctum, Hall. (rr) 

 XVIII A*. Exposures in Pleasant brook below Card's mill, one mile 



above Upperville. The rocks are blue shales that split into fine, smooth 

 fragments, alternating with calcareous layers which contain fossils in abund- 

 ance and form layers termed " firestones." Such a calcareous layer six inches 

 in thickness is exposed in the bed of the brook under the highway bridge and 

 contains a large number of fossils, as Spirifer muwonatus (Con.), Bill., and 

 other species. In the shales above the calcareous stratum just mentioned are 

 large numbers of Zdorhynchus multicostus, Hall, which is the most common 

 fossil at this locality. This exposure is about seventy-five feet above the 

 falls at Upperville, and is in the Hamilton formation. The following species 

 were collected : 



1. 



T,/ < >f]i a licit ii ft in ii/tico.stns Hall 



( aa ) 





() rtliothetex ( 'Iie/n u ne/ensis ( Con ) Hall and Chii'ke 





3. 



\tliiiris 1 Sin i i iii' i ii ) sin ritrrnides I Eaton ^ Hall 



(r) 



4. 



Si>i rit'i r con sohri n 11 s D'Orl )uni\ '=?/c~<tc Hall 



(rr) 



5 



Sitft'it^i' n tut yiii) v (\iCYi\ \ TTall and f^lnrlvf- 1 



Ujjvi vtfji wj i (//( un/ot(0 \ will ly AXciiJ. <iii'i vyitw JVV. 







(Imperfect specimen.) 





6. 



Slur iter in iici'OiidtuR ( Con ^ Rill 



(rr) 





Spirifei' a udaculus (Con.), Hall and Clarke. 



(rr) 



8. 



At r >j pa reticularis (Lin.), Dalm. 



(rr) 



9. 



Orihis Vanuxerni, Hall. (?) 



(r) 



10. 



Anihoccelia umbonata (Con.), Hall. 



(r) 



11. 



Stropheodonta, sp. (very imperfect specimen). 



(rr) 



12. 



Tfropidoleptus ca/rinal/tis (Con.), Hall. 



(c) 



13. 



Chonetes scitula, Hall. 



(c) 



14. 



Clwnetes setigera, Hall. 



(r) 



15. 



Terebratulo id shell too imperfect to identify generically. 



(rr) 



16. 



Orbiculoidea, sp. cf. with (). Seneca, Hall. 



(rr) 



17. 



Nucula hll /striata (Con.), Hall. 



(rr) 



18. 



Xnriila lirata (Con.), Hall. (?) 



(rr) 



19. 



PaloBoneilo constricta (Con.), Hall. 



(rr) 



20. 



Palceoneih emw'gmata (Con.), Hall. 



(rr) 



21. 



Pidaoneilo in iita, Hall. 



(rr) 



22. 



Modiella pygmoea (Con.), Hall. 



(rr) 



2.".. 



Tellinqpsis subemargmata (Con.), Hall. 



(rr) 



24. 



Modiomorpha siibalata (Con.), Hall. 



(rr) 



