(Fleming, 1823)

Description
A small, shelled, pelagic thecosomatous pteropod with a left-coiled shell. The spire is moderately highly coiled. There is no umbilical keel. Transverse striae are present [Limacina spp.].
According to Van der Spoel et al., 1997 there are two formae distinguished for Limacina retroversa subspecies retroversa, both (possibly) occurring in our area:

Limacina retroversa f. balea
Limacina retroversa f. retroversa

Kingdom Animalia
Phylum Mollusca
Class Gastropoda
Subclass Opisthobranchia
Order Thecosomata
Suborder Euthecosomata
Superfamily Limacinacea
Family Limacinidae
Genus Limacina
Species Limacina retroversa

Status in World Register of Marine Species

Accepted name: Limacina retroversa (Fleming, 1823)

Scientific synonyms and common names

Heterofusus retroversus | Fleming, 1823

Tesch, J.J., 1947. Pteropoda Thecosomata. Fiches d'Identification du Zooplancton, 8 (1947). Conseil International pour l'Exploration de la Mer, Kopenhagen.

van der Spoel, S., L. Newman and K.W. Estep, 1997. Pelagic Molluscs of the World. World Biodiversity Database CD-ROM Series. Version 1.0. ETI, University of Amsterdam, Amsterdam.

Spoel, S. van der, 1972. Pteropoda Thecosomata. Fiches d'Identification du Zooplancton, 140-142 (1972). Conseil International pour l'Exploration de la Mer, Kopenhagen.

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