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Stephanoceras
''Stephanoceras'' (meaning ''crown horn'') is an extinct genus of Stephanoceratoid ammonite which lived during the Bajocian (Middle Jurassic). It is the type genus of the family Stephanoceratidae. Type species ''Ammonites humphriesianum'' J. de C. Sowerby, 1825, subsequent designation by Buchman, 1898 Selected species *''S. humphriesianum'' (J. de C. Sowerby 1825) - Type species *''S. blagdeni'' (Sowerby) *''S. brodeaei'' (J. Sowerby) *''S. mutabile'' (Quenstedt 1886) *''S. umbilicum'' (Quenstedt 1886) *''S. nodosum'' (Quenstedt 1886) *''S. macrum'' (Quenstedt 1886) *''S. pyritosum'' (Quenstedt 1886) *''S. triplex'' Weisert *''S. freycineti'' (Bayle) *''S. kreter'' (Buckman) *''S. leptogyrale'' (Buckman) *''S. boulderense'' Imlay 1982 *''S. coronatus'' (Bruguiere 1789) *''S. quenstedti'' Кoche 1939 *''S. skidegatense'' Whiteaves 1876 Description ''Stephanoceras'' has an evolute shell, as characteristic of the family, with well-developed ribbing and tube ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stephanoceras Humphriesianum
''Stephanoceras'' (meaning ''crown horn'') is an extinct genus of Stephanoceratoid ammonite which lived during the Bajocian (Middle Jurassic). It is the type genus of the family Stephanoceratidae. Type species ''Ammonites humphriesianum'' J. de C. Sowerby, 1825, subsequent designation by Buchman, 1898 Selected species *''S. humphriesianum'' (J. de C. Sowerby 1825) - Type species *''S. blagdeni'' (Sowerby) *''S. brodeaei'' (J. Sowerby) *''S. mutabile'' (Quenstedt 1886) *''S. umbilicum'' (Quenstedt 1886) *''S. nodosum'' (Quenstedt 1886) *''S. macrum'' (Quenstedt 1886) *''S. pyritosum'' (Quenstedt 1886) *''S. triplex'' Weisert *''S. freycineti'' (Bayle) *''S. kreter'' (Buckman) *''S. leptogyrale'' (Buckman) *''S. boulderense'' Imlay 1982 *''S. coronatus'' (Bruguiere 1789) *''S. quenstedti'' Кoche 1939 *''S. skidegatense'' Whiteaves 1876 Description ''Stephanoceras'' has an evolute shell, as characteristic of the family, with well-developed ribbing and tuber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |