''Dasyceras'' is an early phylloceratid from the

Sinemurian In the geologic timescale, the Sinemurian is an age and stage in the Early or Lower Jurassic Epoch or Series. It spans the time between 199.3 ± 2 Ma and 190.8 ± 1.5 Ma (million years ago). The Sinemurian is preceded by the Hettangian and is ...

stage of the lower Jurassic, found in Europe. The shell is evolute, compressed in section. Inner whorls are smooth, outer mature whorl develops coarse falcoid ribs that arise near the umbilical rim but to not pass over the rounded venter.

References

;Notes ;Bibliography * Arkell ''et al.'', 1957. Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L. Geological Society of America. Early Jurassic ammonites of Europe Ammonites of Europe Sinemurian life Ammonitida genera Phylloceratina {{ammonite-stub