Huhn, 1949
Usually circular or subcircular in outline, shell phosphatic or punctate calcareous; pedicle opening, when present, confined to pedicle valve, growth of pedicle valve holoperipheral or mixoperipheral; shell secretion of brachial valve more variable, beak marginal to subcentral.
Source: Moore, 1965.
The following taxa that belong to this order occur in this region:
Suborder Craniidina
Superfamily Craniacea
Family Craniidae
Genus Crania
Crania anomala