466 



Notices of Memoirs — Ammonites of the Trias. 



Tabulae. Conspectus op the Vertical Distribution of the Triassic 

 Ammonites. 











13 



s 

 Hi 



's a 



P § 

 C5-S 







Me diterranean 

 Province. 



Juvavian Province. 





cj 



1 



i 



"1 



! 



§ 

 .§ « 



~ s 



P 



V 

 N' 



I 1 



1 





1 

 1 



o 

 N' 



11 



g | 



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 8 



S 

 £ £ 



II 



Is. 



1 

 u 



N' 







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"is. 



Tirolitcs . 

 Ceratites . 

 No rites 

 Balatonites 

 Hungarites 

 Trachyceras 

 Arpadites . 

 Acrochordicer 

 Aegoceras . 

 A maltheus 

 Ptychites . 

 Carnites . 

 Pinacoceras 

 Megaphyllites 

 Sageceras . 

 Monophyllites 

 Phylloceras 

 Arcestes 

 Sphingites . 

 Cladiscites . 

 jfoaniiites . 

 Didymites 

 Lobites 

 Tropites 

 Entomoceras 

 D is tic kites 

 Sagenites . 

 Heradites 

 Clydonites . 

 Choristoceras . 

 Helidites . 

 Badiotites. . 

 1 Cochloceras 

 Pkabdoceras . 



zs 













— 







— 















— 





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— 



from other Ceratitidce. Broad high saddle-trunks, from which depart 

 divided leaf-like branches. Similar branches rise from the bases of 

 the lobes. Auxiliary lobes uncommonly small. 

 Clydonitidae. 

 Clydonites, Hauer. — Generic type : Clyd. decoratus, Hauer. Evolute 

 whorls beset with thronged, irregularly granulated, small ribs, uniting 

 over the convex portion. Lobe-line with entire margin, undulated. 



