620 • NEW YORK STATE MUSEUM 



branches. Bifurcations very far apart, longest brancli 215 mm, maximal 

 width of branch (much flattened out) 2.4 mm. Thecae numbering, appar- 

 ently, 10 in 10 mm, little prominent, inclined at a low 

 angle (about 10°). 



Position and locality. Graptolite bed 2 (Tetra- 

 graptus horizon) of the Deep kill section. 



Remarhs. This species, which is the only repre- 

 sentative of the entire group in the Deep kill beds, 

 is distinguished from the type species of the genus, 

 Temnograptus multiplex, by the straight 

 Fig. 36 Temnograptus direction and more rigid appearance of the branches 



noveboracensis sp.nov. _. .. ipt p ^ ^ ^ 



Frasment of a slightly ob- and the Smaller anffles 01 diversrence ol the branches 



liquely compressed branch. O o 



Dorsal view showing the in- :\ £ ' ^• j.' £ jss j.1 t?v tt ^ 



ternai apertures of the the- and 01 inclination 01 the thecae. J^ rom Molograp- 



cae. Deep kill. x3 ^ _ . 



tus richardsoni Hall (sp-)? i^^ only closer 

 American relative, it differs by its much more Avidely separated points of 

 bifurcation, more nearly dichotomous branching and smaller angle of inclina- 

 tion of the thecae. 



GONioGRAPTus McCoy. 1877 



The genus Goniograptus was proposed by McCoy [1876, p.l28] for 

 " such types as the present, in which the branches of the f unicle (for which 

 I would suggest the name stolons) are regularly bent at the points of 

 budding into the celluliferous stems." The genus was recognized by Lap- 

 worth, while Roemer and Freeh, from the point of view that the mode of 

 branching is of little generic importance in comparison with that of the 

 form of the thecae, are inclined to refer Goniograptus to Clonograptus, which 

 is retained as a subgenus of Dichograptus. 



While in Clonograptus the branching takes place entirely irregularly 

 and thus represents a primitive stage of development, it has become rigidly 

 fixed in Goniograptus in such a fashion that four zigzagged principal axes 

 are formed, from the angles of which regularly spring undivided branches. 

 The peculiar direction of development taken by this species appears 



