GRAPTOLITES OP NEW YORK, PART 1 



783 



Caryocaris cf. curvilineatus Gurley 



Page 738 



17 Prevailing aspect of the bodies at the Deep kill section, referred to this 



species. x6^ 

 Graptolite bed 1 of the Deep kill section 



Grenus dawsonia Nicholson 

 Dawsonia tridens Gurley 



Page 741 



18 Specimen showing incisions suggestive of thecae and a longitudinal axis. 



i7 



19 A similar specimen with more distinct denticles. x6 



Graptolite bed 2 of the Deep kill section 



20 A specimen showing two thecoid tubes. x7 



Graptolite bed 1 of the Deep kill section 



Dawsonia monodon Gurley 



Page 741 



21 Complete specimen showing a long median and two lateral appendages. 



x2 



22 A smaller specimen with less developed lateral appendages. x6^ 



23 Afurther enlargement of the original of figure 21 (x6i) to show more 



distinctly tlie thecal tubes of the middle appendages 



24 A specimen with strongly developed narrow, lateral appendages. x8 



Graptolite bed 1 of the Deep kill section 



25 Frontal vieAV of a middle appendage showing four apertures. x7 



Graptolite bed 3 of the Deep kill section 

 2H A specimen with broad median and short lateral appendages. xG^ 

 Graptolite bed 1 of the Deep kill section 



