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Temporal range: M Triassic
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Ceratitida
Superfamily: Ceratitaceae
Family: Acrochordiceratidae
Genus: Acrochordiceras
Hyatt, 1877

Acrochordiceras is a Middle Triassic ammonoid cephalopod belonging to the ceratitid family Acrochordiceratidae, included in the superfamily Ceratitaceae.

The shell of Acrochordiceras, as with the family, is more or less involute with strong, almost transverse, ribs that cross the arched venter uninterrupted. The ventral lobe is bifid. The first lateral lobe is larger than the other and is multi-pronged. Prongs on subsequent smaller lobes are less developed and saddles are small and rounded.

Acrochordiceras was described by Hyatt in 1877 and is known from Eurasia, Timur, California and Nevada.


  • Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geol. Soc. of America and Univ. Kans. Press.