Kingdom Animalia Superfamily Turrilitaceae Phylum Mollusca Order Ammonitida | Suborder Turrilitina Family Anisoceratidae Rank Genus Subclass Ammonites | |
Similar Ammonites, Puzosia, Hamites, Mortoniceras, Brancoceras | ||
Anisoceras is a heteromorph ammonite belonging to the turrilitacean family Anisoceratidae. 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
Anisoceras Wikipedia(Text) CC BY-SA