''Bettoniceras'' is genus of ammonite that lived during the

Pliensbachian The Pliensbachian is an age (geology), age of the geologic timescale and stage (stratigraphy), stage in the stratigraphic column. It is part of the Early Jurassic, Early or Lower Jurassic epoch (geology), Epoch or series (stratigraphy), Series an ...

stage of the

early Jurassic The Early Jurassic Epoch (geology), Epoch (in chronostratigraphy corresponding to the Lower Jurassic series (stratigraphy), Series) is the earliest of three epochs of the Jurassic Period. The Early Jurassic starts immediately after the Triassic-J ...

. It evolved from '' Reynesocoeloceras'' in Davoei ammonite zone and died out during Margaritatus zone. It is possible that ''

Prodactylioceras ''Prodactylioceras'' is genus of ammonite that lived during the Pliensbachian stage of early Jurassic The Early Jurassic Epoch (geology), Epoch (in chronostratigraphy corresponding to the Lower Jurassic series (stratigraphy), Series) is the e ...

'' evolved from this genus. Fossils of this genus have been found in Europe, Morocco, Tunisia, and Chile. Sometimes this genus is not considered valid, but just as a synonym of ''Prodactylioceras''.

Description

Ammonites of this genus had serpenticone planulate shells with mostly single ribs and no tubercules. Whorl section was round. Only difference between ''Prodactylioceras'' and ''Bettoniceras'' is that latter is missing tubercules.

References

Dactylioceratidae Pliensbachian life Early Jurassic ammonites of Europe Ammonites of Africa Ammonites of South America Jurassic Chile Ammonitida genera Fossil taxa described in 1977 {{Ammonitina-stub