Eatoniellidae

Eatoniellidae
Eatoniellidae
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Cingulopsoidea
Family: Eatoniellidae
Ponder, 1965
Genera

See text

Eatoniellidae, commonly known as eatoniellids, are a taxonomic family of minute sea snails, marine gastropod molluscs in the superfamily Cingulopsoidea.

Description

Eatoniellidae have a simple, conical shell. Typically both the shell and protoconch are smooth and, the protoconch is not distinct from the adult shell. Members of the family have a simple, ovate apterture which is not distinctly angled. The family can be identified due to members having a simple conical shell, a pegged oprtculum, 'littorinid'-type radula, opercular tentacles present in some species, aphallate males, and open prostrate and pallial oviduct.[1]

Taxonomy

The family was first described by Winston Ponder in 1965, who assigned the genus Eatoniella, originally described by William Healey Dall in 1876, as the type genus. Ponder also described three other genera in the Eatoniellidae family in the same paper: Crassitoniella, Eatoniella, Liratoniella and Pupatonia.[1] According to taxonomy of the Gastropoda by Bouchet & Rocroi (2005) the family Eatoniellidae has no subfamilies.

Ecology

Members of this family are typically found in cold, shallow waters primarily in the Southern Hemisphere, with the greatest species diversity found around the waters of New Zealand.[2] Northern Hemisphere species are known from Japan, Sri Lanka and Hawaii.[2] Eatoniellids live on algae, grazing and feeding on microdetritus.[3] They are typically found in lower littoral and shallow sublittoral zones.[2]

Genera

Genera within the family Eatoniellidae include:

Genera brought into synonymy
  • Eatonia E.A. Smith, 1875: synonym of Eatoniella Dall, 1876

References

  1. ^ a b Ponder, W. F. (1965). "The Family Eatoniellidae in New Zealand". Records of the Auckland Institute and Museum. 6: 47–99. ISSN 0067-0464. JSTOR 42906115. Wikidata Q58676802.
  2. ^ a b c Ponder, Winston F.; Yoo, E. K. (1978). "A revision of the Eatoniellidae of Australia (Mollusca, Gastropoda, Littorinacea)". Records of the Australian Museum. 31 (15): 606–658. doi:10.3853/J.0067-1975.31.1978.206. ISSN 0067-1975. Wikidata Q92172879.
  3. ^ Di Luca, J; Penchaszadeh, P.E.; Pastorino, G. "Spawning and development of the Patagonian cold-water microgastropod Eatoniella turricula Ponder and Worsfold 1994 (Caenogastropoda: Eatoniellidae)". Polar Biology. 47: 1221–1229. doi:10.1007/s00300-024-03299-w.

Further reading

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