GRAPTOLITES OF NEW YORK, PART 2 



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parts are inclined to become pendent. The branches are filiform, smooth, 

 as a rule retaining but a central row of circular pits (about 2.2 mm apart 

 from each other ), apparently only on one side of the branch. When perfectly 

 preserved, rows of long conical pedunculate, obliquely ascending appendages, 

 1.2— 1.5 mm long, are observed bearing on their pedunculate bases pairs of 

 similarly shaped, usually shorter and slightly inward curved opposite cones- 



Formation and localities. Walcott has recorded this species from the 

 Utica slate, town of Trenton, Oneida co., N. Y. The 

 New York State Museum possesses a large series of 

 specimens from Holland Patent, town of Trenton, N. Y. 

 which is the type locality. The fine specimens retaining 

 the thecae here described and floured are in Dr Ulrich's 

 collection and come from the lower third of the Eden 

 shale at Covington, Ky. Another not very favorably 

 preserved, very delicate specimen in the same collection, 

 possibly belonging to another species is from the lower 

 third of the Richmond group (Clarksville, O.). The 

 occurrence of M . tenuiramosus in the Cincinnati 

 group has long been recognized and the species cited 

 from there by Ulrich [1880] as occurring between 0-200' 

 above low water, by James [1892] and Harper and Bassler 

 [1896 J, the latter authors restricting its horizon to 50 to 

 200' above low water mark. Nickles cites it in his 

 Geology of Cincinnati from the "Lower Utica" (80 feet) only. Of its 

 presence in the Lorraine shale of Canada I have been able to convince 

 myself by a specimen from St Bruno mountain, County Chambly, Quebec, 

 sent by Professor Whiteaves. Both the geographic distribution and the 

 range of this species were hence quite considerable. 



Remarks. The novelty and probable significance for phylogenetic 

 conclusions of the pedunculate theciform appendages of this species have 

 already been noted in the discussion of the new genus here proposed. 



It has also been observed at that place that the thicker branches at 



II 



Fig. 114 Mastigograp- 

 tus tenuiramosus (Wal- 

 cott). Copies of original 

 figures 



