REPORT OF THE STATE PALEONTOLOGIST 1902 



1189 



23 A dark limestone in massive bed 12', 1" thick with chert 

 in the lower 4 feet. Fossils are abundant. 



Anastrophia verneuilli Hall, r 

 Dalmanella perelegans Hall, c 

 Strophonella punetulifera {Conrad), r 



Atrypa reticularis Linne, a 

 Hindia fibrosa (Roemer), a 

 Gypidula galeata Dahnan, a pauei- 



plicate form 

 Gypidula galeata, large form with 



coarse bifurcating plications 



21 At the top of the quarry a layer 11', 6" thick assumes a 

 more shaly structure and shows fairly well marked cleavage. 

 It forms, together with the next overlying bed, 25, a transition 

 zone from the Coeymaus to the New Scotland limestones. It 

 is full of Gypidula and other fossils, as listed. 



Gypidula galeata Dahnan, aa 

 Leptaena rhomboidalis (Wilck.), c 

 Atrypa reticularis Linne, a 

 Stropheodonta varistriata (Conrad), c 

 Hindia fibrosa (Roemer), c 

 Leptaenisca concava Hall (?) r 

 Rhynchospira globosa Hall, r 

 Spirifer cyclopterus Hall, r 



Orthothetes sp.? 

 Dalmanella perelegans Hall, c 

 Uncinulus nucleolatus Hall 

 Lichenalia torta Hall 

 Spirifer octocostatus Hall (?) 

 Chaetetes sphaericus Hall 

 Strophonella punetulifera (Conrad) 

 Rhipidomella, small species 



25 Shaly, dark gray, argillaceous limestone with strongly de- 

 veloped slaty cleavage, 4-ffeet, thick, showing in the hill slope 

 above the top of the quarry. Lithologically this rock resembles 

 closely the lower portion of the New Scotland beds farther up 

 the hillside. It abounds in fossils, of which the most abundant 

 is ( r y p i d u 1 a galeata. It is considered to be the upper- 

 most layer of the Coeymans limestone, as above this the index 

 fossil, Gypidula. becomes rare or 'is entirely wanting. (Museum 

 no. 3300) 



Gypidula galeata Dolman, aa 

 Atrypa reticularis Linne, a 

 Uncinulus nucleolatus Hall, c 



Dalmanella perelegans Hall, c 

 Nucleospira ventricosa Hall, r 

 Parazyga deweyi Hall, r 

 Lichenalia torta Hall, r 

 Platyceras sp.? r 



Atrypina imbricata Hall, c 

 Spirifer perlamellosus Hall 

 Bilobites varica (Conrad), c 



New Scotland beds 



(Formerly Cat skill shaly and Delthyris shaly limestone; also Lower 

 shaly of Davis) 



The thickness of this formation is given as 100 feet, but this 

 figure is based on estimate only, as exact measurement of the 

 entire formation has not yet been possible. At no single point 



