''Milda'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
sea snail
Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...
s,
marine gastropod
Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, freshwater, and fro ...
mollusk
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...
s in the
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
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. The great majority of species of pyrams are micromol ...
, the pyrams and their allies.
[Rosenberg, G. (2012). Milda Dall & Bartsch, 1904. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=707662 on 2012-10-12]
Species
Species within the genus ''Milda'' include:
* ''
Milda cincta''
(Reeve, 1842)
* ''
Milda garretti''
(Tryon, 1886)
* ''
Milda ogasawarazimana''
(Nomura, 1939)
* ''
Milda ventricosa''
(Guérin, 1831)
Description
The
umbilicated shell is elongate conic. It increases regularly in size with three folds on the
columella
Lucius Junius Moderatus Columella (, Arabic: ) was a prominent Roman writer on agriculture in the Roman Empire.
His in twelve volumes has been completely preserved and forms an important source on Roman agriculture and ancient Roman cuisin ...
. The basal fasciole is present. The surface is less polished than in ''
Pyramidella
''Pyramidella'' is a genus of minute to medium-sized sea snails, marine gastropod mollusc in the subfamily Pyramidellinae of the family Pyramidellidae, the pyrams and their allies.
''Pyramidella'' is the type genus of the family Pyramidellida ...
''. It is marked by lines of growth and microscopic spiral striations.
Proceedings of the Biological Society of Washington, vol. 17, 1904
/ref>
References
External links
To World Register of Marine Species
Pyramidellidae
{{Pyramidellidae-stub