1910 



AMMONITES ELABORATUS 



22C 



Comparable Species 

 Am. vittatus ; Phillips, 1829, xiii, i. 



Am. costatus spinatus, Quenstedt, 1849, V' i<> '> 1857, XXI, i, 2 

 these figs, re-named Pleuroceras pseudo-spinatum, Hyatt, 1867, go. 

 Am. costatus spinatus ; Quenstedt, 1885, xlii, 25, 27. 



