Handbook of Paleontology 373 



Actinopterin obliquata; trilobites as Dalmanites micrurus 

 and Proetus protuberans ; the honeycomb coral, Favo- 

 sites helderbergiae and large crinoid stems (Melocrinus) 

 and the crinoid Cordylocrinus plumosus. The Coeymans 

 limestone of Schoharie and Herkimer county has fur- 

 nished a number of beautiful crinoids and strange cys- 

 toids. From the former area come the crinoids Melo- 

 crinus nobilissimus, M. pachydactylus, Brachiocrinus 

 nodosarius and the cystoid Lepocrinites (Lepadocrinus) 

 gebhardi; from the latter, the crinoids Melocrinus pau- 

 cidactylus and Lasiocrinus scoparius, the cystoid Ano- 

 malocystis cornutus and the starfish Hallaster forbesi. 



The Kalkberg limestone (Chadwick '08) is typically 

 exposed along the Catskill creek, near Catskill, Greene 

 county, and received its name from the local Dutch name 

 for the Helderberg ridge (Kalkberg, meaning limestone 

 mountain). The name was applied to certain beds be- 

 twen the Coeymans and typical New Scotland, variously 

 included in these members previously, which have a 

 wide distribution, carry a mixed fauna and are charac- 

 terized by parallel seams of black flint. In the type 

 section this limestone has a thickness of about 40 feet 

 but the thickness varies in this area from 25 to 40 feet. 

 In the Helderberg area only about 20 feet are repre- 

 sented. The Kalkberg is of a darker color, more im- 

 pure, less granular and more fossiliferous than the Coey- 

 mans, and more silicious and less shaly than the New 

 Scotland, though in certain areas, as. the Helderbergs. 

 there are thin, highly fossiliferous limestones interbedded 

 with shales like those of the overlying New Scotland, 

 and the beds weather a buff color. Where the chert 

 beds are more heavy and the limestone more pure, as 

 in the type area, the Kalkberg forms a cliff in con- 



