1914 PORPOCERAS VERTICOSUM 9 IC 





Comparable Species 



I 4^ 24 33 



( 71 21 26 



52 1 

 61 f 



Am. subarmatus; d'Orbigny, 1844, lxxvii — T. 80, 21, 28, 62, 

 Am. subarmatus; Hauer, 1856, xv, 6-8 — F. 67, 24, 30, 54. 



Am. subarmatus ; Dumortier, 1874, xxviii, 6, 7 — F. 71, 23, 21, 58, 



J;;/, subarmatus ; Quenstedt, 1885, xlvi, 16 — F. 64, 24, — , 58 ; 



17— F. 74, ~22, — , 59. 



Cceloceras (Peronoceras) subarmatitm ; Joly, 1905, I — F. 87, 22, 



26, 60. 



See alsop. 91b and Nos. 29, 50, 57, 90. 



