AMMONOIDEA 



Rhacophyllites, Zittel (Fig. 1170); />/</. ;/////- s, Walm.-r ; 1'L Suess (Figs. 



FIG. 1170. 

 Rhacophyllites neojurensis, Quenst. sp. Keuper ; Hallstaclt, Austria. 



Fio. 1171. 



FIG. 1172. 



Phylloceras keterophyttvm, Sowb. sp. Upper l>hyU<;-,'< ///.-A -In,;, /-/, yu.-nst. sp. Titlmnian 



Lias; Whitby, Yorkshire. Moravia. .I/., Antisiphonul 1..J..-. 



>7. /, I ni a- a"- n ! l.'i AI. 



Fio. 1173. Fio. 1174. 



Suture -line of Phylloceras Nilssoni, Heb. sp. Suture-line of Soioerlriccras tort!snl,titii*, d'Orb. sp. 



Upper Lias. (after Quenstedt). 



SL, Ventral or siphonal lobe ; L, First, and I, Second lateral lobes ; a* , Inner or so-called auxiliary lobes ; 

 it, Line of involution ; Li, Second dorsal lobe; AL, Antisiphonal lobe. 



1171-1173); Sou-erbiceras, Paroni and Bon. (Fig. 1174); Dasyceras, gen. nov. Type 



