- only the
genus Gonionautilus,
known from the
Upper Tri****ic (Norian) of
Europe and
North America. (Alps,
state of Nevada)
Gonionautilus has a smooth, compressed...
-
lateral lobe. Like
Gonionautilus,
Siberionautilus is
derived from the Clydonautilidae, only the
genus is unspecified. As with
Gonionautilus and more advanced...
- †Goldringia †Gomphoceras †Gonatocyrtoceras †Gonioceras †Gonionaedyceras †
Gonionautilus †Gorbyoceras †Gordonoceras †Gorgonoceras †Gouldoceras †Graciloceras...
- Gonionautilidae,
named by
Kummel in 1950 to
contain the
Upper Tri****ic
genus Gonionautilus, have a smooth, involute,
compressed s**** with
narrow flattened venter...
