Evalina
Encyclopedia
Evalina is a small genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of sea snail
Sea snail
Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....

s, pyramidellid
Pyramidellidae
Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs or micromolluscs....

 gastropod mollusks in the tribe Chrysallidini within the family Pyramidellidae
Pyramidellidae
Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs or micromolluscs....

.

The genus has both Recent and fossil
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...

 members.

Life habits

Little is known about the biology of the members of this genus. As is true of most members of the Pyramidellidae
Pyramidellidae
Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs or micromolluscs....

 sensu lato, they are ectoparasites.

Species

Species within the genus Evalina include:
  • Evalina americana Dall & Bartsch, 1904 - type species, as Odostomia (Evalina) americana
  • Evalina nishiana (Yokoyama, 1927)
  • Evalina peasei (Dautzenberg & Bouge, 1933)
  • Evalina waikikiensis (Pilsbry, 1918)
  • Evalina winkleyi (Bartsch, 1909)
  • ...
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