320 



Pars 8 



Sagenites 



Trachysagenites 



Sandlingites 



Sibirites 



Metasibirites 



Thetidites 



Sibyllites 



Siculites 



Sirenites 



Anasirenites 



Diplosirenites 



Smithoceras 



Sphaerites 



Sphingites 



Stacheites 



Steinmannites. . . . 



Stephanites 



Sturia 



Styrites 



Tardeceras 



Tellerites 



Thanamites 



Thisbites 



Tibetites 



Anatibetites 



Xeotibetites 



Paratibetites 



Tirolites 



Bittnerites 



Hololobus 



Metatirolites 



Svilajites 



Tornquistites . . . . 



Trachyceras 



Anolcites 



Protrachyceras 



Tropiceltites 



Amioceltites 



Tropites 



Anatropites 



Gymnotropites 



Microtropites 



Paratropites 



Paulotropites 



Ussuria 



Vishnuites 



Waldthausenites . 



Xenaspis 



Xenodiscus 



o 



SQ 



Neotrias 



