Modulus (gastropod)

Modulus
Shell of Modulus turbinoides (holotype at MNHN, Paris)
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: incertae sedis
Superfamily: Cerithioidea
Family: Modulidae
Genus: Modulus
Gray, 1840
Type species
Trochus modulus
Linnaeus, 1758
Synonyms
  • Aplodon Rafinesque, 1819
  • † Pseudotrochus Heilprin, 1886 ( junior homonym of Pseudotrochus Mörch, 1852 [Achatinidae])

Modulus is a genus of small sea snails, marine gastropod molluscs in the family Modulidae.

Characteristics

(Described as Pseudotrochus) The shell is turbinate and umbilicate, bearing a general resemblance to members of the family Turbinidae or allied groups. However, it differs significantly in the siphonate nature of its aperture. The aperture is round, with the outer lip continuous except at the base, which is truncated by a sharply and obliquely deflected short siphonal canal.

Species

Species within the genus Modulus include:

Taxa inquirenda
Species brought into synonymy

References

  1. ↑ Gray J. E. (1840). Syn. Cont. Brit. Mus., ed. 42, 147 [n.n.]; 1842, Syn. Brit. Mus., ed. 44, 60.
  2. 1 2 "Modulus". WoRMS. World Register of Marine Species. Retrieved 9 August 2021.
  3. ↑ Bouchet, P. & Rocroi, J.-P. (2005). "Classification and Nomenclator of Gastropod Families". Malacologia. 47 (1–2).
  4. ↑ Heilprin, A. (1886–1887). "Explorations on the West Coast of Florida and in the Okeechobee Wilderness; with special reference to the geology and zoology of the Floridian Peninsula. vii + 134 pp". Transactions of the Wagner Free Institute of Science, Philadelphia. 1: 114. Retrieved 16 September 2025. Public Domain This article incorporates text from this source, which is in the public domain.