470 



STRATIGRAPHICAL GEOLOGY 



Brachiopoda. Terebratula sella, T. depressa, Terebratella oblonga, 

 Terebratella Filtoni, Rhynchonella Gibbsi. 



Lamellibranchia. Exogyra sinuata ( = 0strea aquila), Toucasia caudata, 

 Trigonia caudata, Trigonia nodosa ( = Trigonia rudis), 

 Perna Mulleti, Plifcatula placunea, Area aptiensis, 

 Astarte subcostata, Gervillia anceps, Sphaera corru- 

 gata, Cyclorisma parva. 



Gasteropoda. Dicroloma robinaldina, Aporrhais Fittoni. 



Cephalopoda. Hoplites furcatus, Hop. Deshayesi, Douvilleiceras 

 Martini, Macroscaphites gigas, Nautilus pseud - 

 elegans. 



Fig. 156. GROUP OF VECTIAN FOSSILS. 



a. Macroscaptiites gigas. 

 6. Hoplites Deshayesi. 



c. Meyeria magna. 



d. Terebratula sella. 



The northern fauna includes the following characteristic 

 species : 



Fossils of the Belemnites lateralis zone 



Lamellibranchia. Astarte senecta, Trigouia ingens, Aucella volgensis, 



Aucella Keyserlingi. 

 Cephalopoda. Holcostephanus subditus, Hole, kashpuricus, Hole. 



Elicomphalus, Hoplites regalis ( = H. noricus), Hop- 

 tes amblygonius, Belemmtes lateralis. 



Fossils of the Bel. jaculum and Hole, Decheni Zone 



Crustacea. Meyeria ornata. 



Lamellibranchia. Pecten cinctus, Exogyra sinuata. 



