Raymond: Thk Chazv Formation and its Fauna. 545 



F,^. Covered. 19 feet = 196 feet. 



F,j,. Coarsely crystalline, light-gray limestone, with many fragments 



of fossils, mostly trilobites. 4 feet = 200 feet. 



Hebertella vulgaris c, Isotelus ham's i c, 



Ilheniis glo/nysKS c, Leperditia canadensis c. 



Fjjj,. Six feet of blue-gray, fairly coarse-grained limestone full of 

 Camarota'cJiia plena, capped by one foot of impure, nodular limestone. 



7 feet = 207 feet. 



From this point, the remainder of the section, about 60 feet, is 

 covered. The Black Ri\er is exi)osed in many places on both sides 

 of the Little Chazv River, but in no place is the exact contact of the 

 top of the Chazy and the bottom of the Lowville limestone exposed. 



Station at Chazy, New York. 

 Station M,..,- One of the most interesting localities at Chazy is in an 

 old sugar bush about three miles southeast of town and near the lake 

 shore. Here there are coarse-grained blue limestones enclosing reefs 

 of Stroniatocerinin and pure buff dolomite. In these reefs are pockets 

 containing large numbers of large Orthoceratites, and the genera Cyr- 

 toceras and Plectoceras are well represented. The other fossils are : 



Canierella longirostris r, Ilhenus era sin si c, 



Camarotccchia plena r, Illcenus glohosiis c, 



Holopea ? plauta R, AmpJiilichas niinganensis c, 



Bathxurellus brevispiniis R, Glaphurus pustiilatus c. 



This fauna belongs to Division 3. 



Stations at Cooperville, New \ 'ork. 



Station Kj^^. At King's Bay, Cooperville, there is a quarry which 



produced a large part of the stone used in building Fort Montgomery. 



The main body of the (juarry is in a blue-gray, coarse-grained limestone 



which is- full of crinoid and cystid fragments. The fauna consists of: 



Malocystitcs eninionsi c, Monotrypclla sp. c, 



Malocystites sp. c, Plcesiomys platys c, 



Paleocystitcs tenuiradiatus c, Rafinesqiiina incrassata c, 



Blastoidocrinus carchariadens c, Mac lu rites niagnus r, 



Bolboporites aniericani/s r, Orthoceras sp. r, 



Eospongia varians c, Cyrtoceras sp. r, 



