Thylacodes

Thylacodes is a genus of sea snails, marine gastropod mollusks in the family Vermetidae, the worm snails or worm shells. The species in this genus were previously placed in the genus Serpulorbis.[1]

Thylacodes
A view of the shell of a single live Thylacodes squamigerus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Vermetoidea
Family: Vermetidae
Genus: Thylacodes
Guettard, 1770
Type species
Serpulorbis polyphragma Sasso, 1827
Synonyms
  • Aletes P. P. Carpenter, 1857
  • Cladopoda Gray, 1850 (subjective synonym)
  • Serpulorbis Sasso, 1827 (objective synonym)
  • Serpulus (Tetranemia) Mörch, 1859
  • Siphonium (Aletes) P. P. Carpenter, 1857 · unaccepted
  • Tetranemia Mörch, 1859
  • Tulaxoda Blainville, 1828 (objective synonym)
  • Tulaxodus Guettard, 1770

Unlike some other vermetids, the species in this genus have no operculum.

Like other vermetids, the species in this genus do not have regular shell coiling like that of a typical gastropod shell, instead they have shells which are irregular. They are usually cemented onto a hard surface. Because of all this, the shells resemble the calcareous tubes of worms in the polychaete family Serpulidae.

Species

Species within the genus Thylacodes include:

Synonyms
  • Thylacodes angulatus (Rousseau in Chenu, 1844) = Eualetes tulipa (Rousseau in Chenu, 1843)
  • Thylacodes caperatus (Tate & May, 1900) = Petaloconchus caperatus (Tate & May, 1900)
  • Thylacodes dentiferus (Mörch, 1859) = Thylacodes longifilis (Mörch, 1862)
  • Thylacodes effusus (Valenciennes in Chenu, 1844) = Eualetes tulipa (Rousseau in Chenu, 1843)
  • Thylacodes oryzata (Mörch, 1862) = Thylacodes oryzatus (Mörch, 1862)

References

  1. Bieler, R.; Rosenberg, G. (2015). Thylacodes Guettard, 1770. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=598651 on 2015-07-17
  2. Rüdiger Bieler, Camila Granados-Cifuentes, Timothy A. Rawlings, Petra Sierwald, Timothy M. Collins. Non-native molluscan colonizers on deliberately placed shipwrecks in the Florida Keys, with description of a new species of potentially invasive worm-snail (Gastropoda: Vermetidae). PeerJ, 2017; 5: e3158 DOI: 10.7717/peerj.3158
  3. Science News: 'Spiderman' worm-snails discovered on Florida shipwreck; Science Daily, 5 April 2017


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