Geol.— Vol. I.] SMITH— COMPARATIVE STRATIGRAPHY. 36 1 



Most of the fossils collected in this region were taken 

 from the Trachyceras bed, the zone of Trofites suhbullatus. 

 The following is a list of the most important forms : 



TROPITlDiE 



Tropites subbullatus Hauer 

 Tropites dilleri Smith 

 Tropites torquillus Mojsisovics 



Tropites (many new species of the Subbullatus group) 

 Paratropites sellai Mojsisovics 

 Paratropites dittniari Mojsisovics 

 Paratropites (several new species of this group) 

 Sagenites erinaceus Dittmar 

 Sagenites herbichi Mojsisovics 

 Eutonioceras sandlingense Hauer 

 Juvavites subinterruptus Mojsisovics 

 Juvavites ( Anatomites ) sp. nov. 

 Tropiceltites sp. nov. 

 Homerites semiglobosus Hauer 



CERATITIDiE 



Polycyclus henseli Oppel 



Arpadites sp. nov. (group of A. cinensis) 



Tirolites foliaceus Dittmar 



Sirenites sp. nov. 



Sandlingites sp. nov. 



Trachyceras ( Protrachyceras ) shastense Smith 



(several new species of the group of T. attila) 



PiNACOCERATIDiE 



Hauerites (two new species) 



(new genus of this group) 



Ptychitid^ 



Nannites? sp. nov. 



(new genus of this group) 



ArCESTID/E 



Arcestes ( Proarcestes) sp. nov. 



LYTOCERATIDiE 



Monophyllites (Mojsvarites) sp. nov. 



Nautiloidea 



Orthoceras sp. nov. 



Proclydonautilus triadicus Mojsisovics 



(several new species of Nautilus) 



Belemnoidea 



Atractites sp. nov. 



Pelecypoda 



Halobia superba Mojsisovics 



