1918 AMMONITES < RASSUS 119c 



Comparable Species 

 (Selected and measured by Mr. V. E. Robson, F.G.S.) 



38, — Am. crassus ; Dumortier, 1874, xxvn, 



8, 9. 

 39, — Stephanoceras crassum ; Blake, 1876, 



vm, 5. 

 48, — Am. subarmatus ; Reynes, 1879, Lias 



Sup., in, 11, 12. 

 54, 1 Stephanoceras crassioii ; Wright, lxxxvi, 

 56, f 8-10. 



47, — Am. crassus ; Quenstedt, 1884, xlvi, 21. 

 50, — Id. xlvi, 23, below change. 



See also Nos. 59, 69, 89. 



