NAPLES FAUNA IN WESTERN NEW YORK, PART 2 373 



which occur in the black shales have been quite generally regarded as indi- 

 cating the age of the Genesee of New York. 1 



In the area north of the Cincinnati dome 2 Newberry found, in a thin 

 gray layer near the upper part of the Ohio shale, fossils which he regarded 

 as indicative of the Portage fauna of New York. These are cited as 

 "Clymenia? complanata, Chonetes speciosa, Orthoceras 

 aciculum and Leiorhyncus quadricostatus." For these names 

 we may read Probeloceras lutheri, Cardiola speciosa 

 (== B u c h i o 1 a retrostriata), Bactrites aciculum, L. quadri- 

 costatum, a congeries which is indeed indicative of the Intumescens 

 fauna;. Whitfield has described from the nodules occurring in the Huron 

 shale a number of remarkable Crustacea, Palaeopalemon new berry i, 

 Echinocaris multinodosa, E. pustulosa and E. sublaevis. 

 Remains of Echinocaris and other Phyllocarids occur with rarity in the 

 Intumescens zone of New York, while Ling u la ligea Hall, which 

 Whitfield also found in the Huron shale, is everywhere present in the black 

 shale bands of the Portage and occasionally in the gray shale. We may 

 note in passing that, though the remains of decapods have not been 

 observed at this stage elsewhere in America, yet Richter long ago described 

 from the Cypridina shales of the Thuringian Forest a species of this 

 character which he termed Gitocrangon granulatus. 3 The Ohio 

 geologists agree that the black shale is there underlain by beds carrying 

 the Hamilton fauna. In Indiana, according to recent observation by E. M. 

 Kindle, the New Albany black shale rests on the Devonic limestones which 

 carry a profuse Middle Devonic brachiopod fauna. Mr Kindle has shown 

 that in these sections the black shale is interbedded with gray sandy shale, 



1 Dr Girty has brought together the various views which have been expressed on the 

 correlation of the black shale in eastern Kentucky and has described a number of species 

 from the beds at Vanceburg with the New York formations and other- localities. (Fauna 

 found in the Devonian Black Shale of Eastern Kentucky. Am. Jour. Sci. 1898. 6 -.384) 



2 Geol. of Ohio. 1873. 1 1154. 



^ Richter. Beitrag zur Palaontologie des Thiiringer Waldes. 1848. p. 43. 



