Various Smaller Ammonites; Class III; Pl. XXXIX; Fig. 254: Cornes d'Ammon; ?petits tubercules; Figs. 255-257: Diff閞entes Cornes d'Ammon; ?petits tubercules; Figs. 258 & 259: Corne d'Ammon; ?dos crenel? Fig. 260; : Corne d'Ammon ?double crenelure; Fig. 261: Corne d'Ammon; ?petites raies & a fleurs; Fig. 262: Corne d'Ammon; ?doubles tubercules; Fig. 263: Corne d'Ammon; ?plusieurs volutes; dont les raies of du center ?la circonf閞ence; Fig. 264: Corne d'Ammon; ?dos att閚u?en tranchant du couteau; pl. xxxix; after p. 312; 1778; Louis Bourget: Trait?des p閠rifications. Paris: Jombert; 1778