''Anisoceras'' is a heteromorph ammonite belonging to the turrilitoid family

Anisoceratidae Anisoceratidae is an extinct Family (biology), family of heteromorph ammonites which belong to the Ancyloceratina superfamily Turrilitoidea. Members of the family range is from the lower Albian to the upper Turonian. The family is possibly deriv ...

. The shell forms a loose open helical spiral in the early stages, ending in one or two straight shafts in the mature adult. Surface ornament consists of prominent rounded nodes on the lower and upper flanks, connected by strong looped ribs. The nodes may have been the bases of long sharp spines.

References

* *Marcinowski and Wiedmann. The Albian Ammonites of Poland. Palaeontologia Polonica no. 50, 1990
The Paleobiology Database ''Anisoceras'' entry
Ammonitida genera Cretaceous ammonites Ammonites of Australia Albian genus first appearances Turonian genus extinctions Cenomanian genera Fossil taxa described in 1854 Turrilitoidea {{Ammonitida-stub