Instead of an external calcareous shell, they possess a
pseudoconch, consisting of
conchiolin, a cartilaginous tissue. The
mantle and the gill have disappeared as well. They breathe through the skin. They prefer warm water.
Distribution
Cymbuliidae are found in all marine waters between -54 and 55°N.[3]
^van der Spoel (1976). Pseudotecosomata, Gymnosomata and Heteropoda (Gastropoda). page 40.
^Gofas, S. (2010). Cymbulia parvidentata Pelseneer, 1888. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at
http://www.marinespecies.org/aphia.php?p=taxdetails&id=139493 on 2010-12-18
^Gofas, S. (2010). Cymbulia peronii Lamarck, 1819. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at
http://www.marinespecies.org/aphia.php?p=taxdetails&id=139494 on 2010-12-18
^Rosenberg, G. (2010). Cymbulia sibogae Tesch, 1903. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at
http://www.marinespecies.org/aphia.php?p=taxdetails&id=532721 on 2010-12-18
^Gofas, S. (2010). Gleba chrysosticta (Troschel, 1854). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at
http://www.marinespecies.org/aphia.php?p=taxdetails&id=139495 on 2010-12-18
^Gofas, S. (2010). Gleba cordata Forskål, 1776. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at
http://www.marinespecies.org/aphia.php?p=taxdetails&id=139496 on 2010-12-18