Astiericeras

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: Albian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Suborder:	†Ancyloceratina
Family:	†Douvilleiceratidae
Subfamily:	†Douvilleiceratinae
Genus:	†Astiericeras Parona & Bonarelli. 1896

Astiericeras is generally considered to be a douvillieceratid.^[2] However, according to W. J. Kennedy, the genus may instead be a scaphitoid.^[3]