Astiericeras is an ammonite from the Lower Cretaceous, the shell of which is evolute, stout; outer whorl with strong, well spaced, transverse ribs that cross smoothly over the broad venter; early whorls with lateral tubercles. The outer, mature whorl separates from the coil but hooks back quickly, referred to as a heteromorph.
Astiericeras Temporal range:
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Superfamily: | Ancylocerataceae (?)
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Subfamily: | Douvilleiceratinae
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Genus: | Astiericeras Parona & Bonarelli. 1896
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Astiericeras is generally considered to be a douvillieceratid.[2] However, according to W. J. Kennedy, the genus may instead be a scaphitoid.[3]