Patera (gastropod)

Patera is a genus of land snails in the family Polygyridae.

The name is from the Latin patera ("a saucer"), and refers to the highly depressed, saucer-like shape of the shells of these snails. In addition to flattened shells, members of the group have an imperforate umbilicus and a single tooth on the parietal wall of the aperture.

These snails are known only from the eastern United States.

Species
Species include:
 * Patera appressa – flat bladetooth
 * Patera binneyana – half-lidded oval
 * Patera clarki – dwarf proud globe
 * Patera clarki clarki
 * Patera clarki nantahala – noonday globe
 * Patera clenchi – Calico Rock oval, Clench's middle-toothed land snail
 * Patera indianorum – lidded oval
 * Patera kiowaensis – drywoods oval
 * Patera laevior – smooth bladetooth
 * Patera leatherwoodi – Pedernales oval
 * Patera panselenus – Virginia bladetooth
 * Patera pennsylvanica – proud globelet
 * Patera perigrapta – engraved bladetooth
 * Patera roemeri – Texas oval
 * Patera sargentiana – grand bladetooth