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Gymnobela

Gymnobela is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.

This genus can sometimes be hardly differentiated from species in the genera Spergo <small>Dall, 1895</small>, Theta <small>Clarke, 1959</small> and Speoides yoshidae <small>Kuroda & Habe in Habe, 1961</small> (a synonym of Gymnobela yoshidae <small>(Kuroda & Habe, 1961) </small>)

This genus is highly diverse. It is rather an artificial assemblage of several unrelated genus-level lineages that are unrelated and mostly undescribed.

Description

The rather solid shell is in form and general appearance like Bela. The spire is generally rather short. The body whorl is swollen. The whorls are often shouldered. The sculpture is rather strong. The protoconch has a fine cancellated sculpture. The subsutural band is not strongly marked. The posterior notch of the lip is shallow and usually not very distinct. The operculum is absent.

Fossils have been found in Pliocene strata of Panama and Quaternary strata of Costa Rica (age range: 3.6 to 0.781 Ma).

Species

Species within the genus Gymnobela include:

Species brought into synonymy:
  • Gymnobela adenicus [sic]: synonym of Gymnobela adenica <small>Sysoev, 1996</small>
  • Gymnobela agassizi [sic]: synonym of Gymnobela agassizii <small>(Verrill & S. Smith [in Verrill], 1880)</small>
  • Gymnobela bathyiberica <small>Fechter, 1976</small> : synonym of Theta vayssierei <small>(Dautzenberg, 1925)</small>
  • Gymnobela blakeana extensa <small>Dall, 1881</small> : synonym of Mioawateria extensa <small>(Dall, 1881)</small>
  • Gymnobela brevis <small>Verrill, 1885</small>: synonym of Gymnobela blakeana (Dall, 1881)
  • Gymnobela chariessa <small>(Watson, 1881)</small>: synonym of Theta chariessa <small>(Watson, 1881)</small>
  • Gymnobela curta <small>Verrill, 1884</small>: synonym of Gymnobela aquilarum <small>(Watson, 1882)</small>
  • Gymnobela extensa <small>(Dall, 1881)</small>: synonym of Mioawateria extensa <small>(Dall, 1881)</small>
  • Gymnobela fulvocincta <small>Dautzenberg & Fischer, 1896</small>: synonym of Gymnobela fulvotincta <small>(Dautzenberg & Fischer, 1896)</small>
  • Gymnobela fulvotincta <small>(Dautzenberg & Fischer, 1896)</small>: synonym of Austrobela fulvotincta <small>(Dautzenberg & H. Fischer, 1896)</small>
  • Gymnobela gregaria <small>Sykes, 1906</small>: synonym of Gymnobela leptoglypta <small>(Dautzenberg & Fischer, 1896)</small>
  • Gymnobela grundifera <small>Dall, 1927</small>: synonym of Daphnella grundifera <small>(Dall, 1927)</small>
  • Gymnobela gypsata <small>(Watson, 1881)</small>: synonym of Austrobela gypsata <small>(R. B. Watson, 1881)</small>
  • Gymnobela holomera <small>Locard, 1897</small>: synonym of Gymnobela pyrrhogramma <small>(Dautzenberg & Fischer, 1896)</small>
  • Gymnobela homeotata <small>(Watson, 1886)</small>: synonym of Gymnobela homaeotata <small>(Watson, 1886)</small>
  • Gymnobela imitator <small>Dall, 1927</small>: synonym of Pleurotomella imitator <small>(Dall, 1927)</small>
  • Gymnobela judithae <small>Clarke, 1989</small>: synonym of Mioawateria extensa <small>(Dall, 1881)</small>
  • Gymnobela leptoconchum <small>Locard, 1897</small>: synonym of Gymnobela emertoni <small>(Verrill & Smith in Verrill, 1884)</small>
  • Gymnobela lyroniclea [sic]: synonym of Gymnobela lyronuclea <small>(A.H. Clarke, 1959)</small>: synonym of Theta lyronuclea <small>(A.H. Clarke, 1959)</small>
  • Gymnobela lyronuclea <small>(A.H. Clarke, 1959)</small>: synonym of Theta lyronuclea <small>(A.H. Clarke, 1959)</small>
  • Gymnobela malmii <small>(Dall, 1889)</small>: synonym of Mioawateria malmii <small>(Dall, 1889)</small>
  • Gymnobela micraulax <small>Sysoev, 1997</small>: synonym of Austrobela micraulax <small>(Sysoev, 1997)</small>
  • Gymnobela nudator <small>(Locard, 1897)</small>: synonym of Bathybela nudator <small>(Locard, 1897)</small>
  • Gymnobela pinguis <small>Locard, 1897</small>: synonym of Gymnobela aquilarum <small>(Watson, 1882)</small>
  • Gymnobela procera <small>Sysoev & Bouchet, 2001</small>: synonym of Austrobela procera <small>(Sysoev & Bouchet, 2001)</small>
  • † Gymnobela pusula <small>(Laws, 1947)</small>: synonym of † Acanthodaphne pusula <small>(Laws, 1947)</small>
  • Gymnobela pycnoides <small>Dautzenberg & Fischer, 1896</small>: synonym of Mioawateria malmii <small>(Dall, 1889)</small>
  • Gymnobela pyrrhogramma <small>(Dautzenberg & Fischer, 1896)</small>: synonym of Austrobela pyrrhogramma <small>(Dautzenberg & H. Fischer, 1896)</small>
  • Gymnobela recondita <small>Tiberi, 1869</small>: synonym of Gymnobela pyrrhogramma <small>(Dautzenberg & Fischer, 1896)</small>
  • Gymnobela rhomboidea <small>Thiele, 1925</small>: synonym of Mioawateria rhomboidea <small>(Thiele, 1925)</small>
  • Gymnobela sibogae <small>(Schepman, 1913)</small>: synonym of Spergo sibogae <small>Schepman, 1913</small>
  • Gymnobela subangulata <small>Verrill, 1884</small>: synonym of Gymnobela aquilarum <small>(Watson, 1882)</small>
  • Gymnobela tenelluna <small>(Locard, 1897)</small>: synonym of Bathybela tenelluna <small>(Locard, 1897)</small>
  • Gymnobela tenellunum [sic]: synonym of Gymnobela tenelluna (Locard, 1897): synonym of Bathybela tenelluna <small>(Locard, 1897)</small>
  • Gymnobela tincta <small>Verrill, 1885</small>: synonym of Gymnobela emertoni <small>(Verrill & Smith in Verrill, 1884)</small>
  • Gymnobela vayssierei <small>(Dautzenberg, 1925)</small>: synonym of Theta vayssierei <small>(Dautzenberg, 1925)</small>
  • Gymnobela virgo <small>(Okutani, 1966)</small>: synonym of Bathytoma virgo <small>(Okutani, 1966)</small>
  • Gymnobela watsoni <small>(Dautzenberg, 1889)</small>: synonym of Mioawateria watsoni <small>(Dautzenberg, 1889)</small>

References

External links