The Order Pterioida is further organized into finer groupings including:
- Suborder (1): Pteriina
- Family (17): Ambonychiidae · Bakevelliidae · Cassianellidae · Deltopectinidae · Halobiidae · Inoceramidae · Isognomidae · Lunulacardiidae · Monopteriidae · Monotidae · Myalinidae · Pergamidiidae · Prospondylidae · Prospondylidea · Pterineidae · Pulvinitidae · Streblochondriidae
- Species: ZipcodeZoo has pages for 876 species and subspecies in the Order Pterioida.
Bakevelliidae is an extinct family of prehistoric bivalves that lived from the Late Mississippian until the Middle Eocene. Bakevelliidae species are found worldwide, excluding Antarctica. Living a stationary life attached to substrate in marine and brackish environments, they formed shells of an aragonite composition with a low amount of magnesium calcite. The family was named by King in 1850. At least one genus in the family, , has a notably twisted commissure join. [more]
Inoceramidae was a family of prehistoric clams. Inoceramids tended to live in upper bathyal and neritic environments. In Alaska's Matanuska Formation, the most abundant mollusks in the quarry containing the Talkeetna Mountains Hadrosaur were inoceramids. [more]
Pulvinitidae is a family of bivalves related to the scallops and oysters. [more]
More info about the Family Streblochondriidae may be found here.
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