See text Schloenbachia is a genus of ammonoid cephalopods from the Cenomanian stage of the Upper Cretaceous, and type for the Schloenbachiidae, a family within the ammonitid Hoplitoidea.

[2] The genus has been found in Europe (France, Germany, England), the Middle East (Iran), and North America (California, Oregon).

Schloenbachia varians, known from Europe and Iran, is a highly varied species with a number of possible synonyms.

[4] The variations included cannot be regarded as geographic subspecies or successive chrono-subspecies, but reflect a high degree of variability in shell form and ornament (phenotypic plasticity) in S.

[6] These differ in the nature of the ribbing, tuberculation, and keel as well as the degree of compression or inflation of the shell.