368 NEW YORK STATE MUSEUM 



of significant distinctions. M. a mm on (Timan) is a parallel expression 

 of M. pattersoni. 



M. simulat or and the extremely progressed M. oxy appertain to 

 the same category in New York, and likewise M. o r b i c u 1 u s, M. b u c h i, 

 M. carinatus etc. in Europe. 



Gephyroceras cf. domanicense Holzapfel. This species has been found 

 in the Angola shale of Chautauqua county. Typical forms of G. domani- 

 cense from the Domanik are assigned to no distinctive horizon apart from 

 the rest of the fauna. 



Tornoceras bicostatum Hall. This species, highly characteristic of the 

 Angola and Portland shales of the Chautauqua subprovince, is identical 

 with T orn. c i n c t u m Keyserling. 



Bactrites cf. subflexuosus Keyserling. Of the Domanik shales ; is a 

 species of the Angola shale of the Genesee province. 



Lunulicardium bickense Holzapfel. In the Adorf limestone and the 

 Angola shale. 



Buchiola retrostriata v. Buch. Very common in the lower horizons in 

 both continents. 



B. priimiensis Steininger. At Biidesheim and Oberscheld ; probably in 

 the Angola shale. 



Loxopteria dispar Sandberger. This occurs at a high horizon (Clymenia 

 limestone, Nehden schists) in the Rhine sections. In the Chautauqua sub- 

 province its horizon is likewise high (Portland shale). 



Lox. laevis Freeh. From the Clymenia limestone at Wildungen, from 

 the Angola and Portland shales of Chautauqua county. 



Praecardium vetustum Hall. From high horizons (Nehden shales, Cly- 

 menia limestone) in Westphalia and in the Angola and Portland shales of 

 western New York. 



P. duplicatum Miinster. In the Clymenia limestone of Franconia and 

 the Angola shales of New York. 



Euthydesma subtextile Hall. In the Clymenia and Adorf limestones 

 and in the Angola and Portland shales. 



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