''Cymatosyrinx'' is a genus of

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

s, marine

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusks in the family

Drilliidae The Drilliidae are a Taxonomy (biology), taxonomic family (biology), family of small predatory sea snails with high-spired shells. They are classified as marine (ocean), marine gastropod mollusks in the superfamily Conoidea. This family has no s ...

. The following species have also been found as fossils in the United States and/or in Mexico in the age range: 37.2 to 0.012 Ma: ''Cymatosyrinx aclinica'' Tucker and Wilson 1933 (alternative combination: ''Cymatosyrinx lunata aclinica''), ''Cymatosyrinx dorseyi'' Cooke 1926, ''Cymatosyrinx limatula'' Conrad 1830 (synonyms: ''Drillia limatula'', ''Pleurotoma limatula''), ''Cymatosyrinx lunata'' Lea 1833, ''Cymatosyrinx magnoliana'' Olsson 1916, ''Cymatosyrinx mariana'' Petuch 1988, ''Cymatosyrinx perpolita'' Dall 1890, ''Cymatosyrinx tiara'' Gardner 1948, ''Cymatosyrinx ziczac'' Gardner 1948.

Description

This genus includes the thin-shelled light-colored species, previously included in '' Drillia'' The shell is generally short and stout, the spire often very short. The

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

s contain nodulous axial ribs, extending over the whole of the volutions. They are generally without spiral sculpture, or, if present, very weak. The aperture is subrhomboidal, very little narrowed below, with a short and broad

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ...

. The outer lip is arched, with a shallow sinus towards the suture. The inner lipis large and callous.

Species

Species within the genus ''Cymatosyrinx'' include: * '' Cymatosyrinx arbela'' Dall, 1919 * '' Cymatosyrinx carpenteri'' (Verrill & Smith, 1880) * '' Cymatosyrinx fritillaria'' (Dall, 1927) * '' Cymatosyrinx idothea'' Dall, 1919 * '' Cymatosyrinx impolita'' Kuroda, Habe & Oyama, 1971 * '' Cymatosyrinx johnsoni'' Arnold, 1903 * '' Cymatosyrinx nodulosa'' (Jeffreys, 1882) * '' Cymatosyrinx parciplicata'' (Sowerby III, 1915) * † '' Cymatosyrinx ziczac'' Gardner, 1948 ;Species brought into synonymy : * ''Cymatosyrinx allyniana'' Hertlein & Strong, 1951: synonym of '' Clathrodrillia allyniana'' (Hertlein & Strong, 1951) *''Cymatosyrinx arenensis'' Hertlein & Strong, 1951: synonym of '' Elaeocyma arenensis'' (Hertlein & Strong, 1951) *''Cymatosyrinx asaedai'' Hertlein & Strong, 1951: synonym of '' Imaclava asaedai'' (Hertlein & Strong, 1951) * ''Cymatosyrinx bartschi'' Haas, 1941: synonym of '' Splendrillia bartschi'' (Haas, 1941) * ''Cymatosyrinx centimata'' Dall, 1889: synonym of '' Spirotropis centimata'' (Dall, 1889) * ''Cymatosyrinx ebur'' Dall, 1927: synonym of '' Lissodrillia ebur'' (Dall, 1927) *''Cymatosyrinx elissa'' Dall, 1919: synonym of '' Leptadrillia elissa'' Dall, 1919 *''Cymatosyrinx ferminiana'' Dall, 1919: synonym of '' Globidrillia ferminiana'' Dall, 1919 * ''Cymatosyrinx fritillaria'' Dall, 1927: synonym of '' Ithycythara fritillaria'' (Dall, 1927) *''Cymatosyrinx hecuba'' Dall, 1919: synonym of '' Kylix hecuba'' Dall, 1919 *''Cymatosyrinx hemphilli'' (Stearns, 1871): synonym of '' Globidrillia hemphillii'' (Stearns, 1871) *''Cymatosyrinx hotei'' Otuka, 1949: synonym of '' Imaclava hotei'' (Otuka, 1949) *''Cymatosyrinx lalage'' Dall, 1919: synonym of '' Splendrillia lalage'' Dall, 1919 * ''Cymatosyrinx pagodula'' Dall, 1889: synonym of '' Fenimorea pagodula'' (Dall, 1889) *''Cymatosyrinx palmeri'' Dall, 1919: synonym of '' Calliclava palmeri'' Dall, 1919 *''Cymatosyrinx roseola'' Hertlein & Strong, 1955: synonym of '' Drillia roseola'' (Hertlein & Strong, 1955) * ''Cymatosyrinx splendida'' Bartsch, 1934: synonym of '' Leptadrillia cookei'' (E. A. Smith, 1888) *''Cymatosyrinx strohbeeni'' Hertlein & Strong, 1951: synonym of '' Globidrillia strohbeeni'' (Hertlein & Strong, 1951) * ''Cymatosyrinx thea'' Dall, 1884: synonym of Cerodrillia thea (Dall, 1884)

References

* J. A. Gardner. 1948. ''Mollusca from the Miocene and Lower Pliocene of Virginia and North Carolina: Part 2. Scaphopoda and Gastropoda''. United States Geological Survey Professional Paper 199(B):179-310 * E. J. Petuch. 1988. ''Neogene History of Tropical American Mollusks 1-217''

External links

WMSDB - Worldwide Mollusc Species Data Base: family Drilliidae
{{Taxonbar, from=Q3139985