Amaea decussata
Amaea decussata is an extinct species of predatory sea snails, marine prosobranch gastropod mollusks in the family Epitoniidae.
Taxonomy
The name Scalaria decussata or Amaea decussata, attributed to Lamarck, 1804, has been used for a Recent species from the Indian Ocean. However, the true Amaea decussata is a fossil from the Eocene of the Paris Basin. For the Recent species, see Amaea arabica.Description
The length of the shell attains 18 mm.An elongated, turreted, imperforate shell, marked by transverse striations and densely packed with fine longitudinal ribs. The whorls are tightly contiguous.
The shell is elongated, turreted, with closely adjoining and rounded whorls, and has no umbilicus. Its longitudinal ribs are numerous, closely spaced, and not very elevated. Between them, one can see small but well-defined transverse striations, which intersect with the ribs, giving the shell an elegantly latticed appearance on its surface.