PLATE XIX. 



Page. 



Figs. 1 and 2. Muenstbroceras parallelum Hall , 121 



Figs. 3-8. Muenstbroceras oweni Hall 120 



Figs. 9- U. Prolecanites i.yoki Meek and Worthen 54 



Figs. 12-14. Aganides rotatorius de Koninck 112 



Note. — The figures fin this plate are slightly reduced by photograiJhy from Pal. N. Y., Vol. V, 

 Pt. II, PI. LXXIII. 



All specimens on this plate from the Lower Carboniferous, Kiuderhook stage, goniatite l)ed, 

 Rockford, Ind. 



186 



