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Heterobranchia, the heterobranchs (meaning "different-gilled snails"), is a taxonomic clade of snails and slugs, which includes marine, aquatic, and terrestrial gastropod molluscs. Heterobranchia is one of the main clades of gastropods. Currently Heterobranchia comprises two groups: the opisthobranchs, and the pulmonates. [2]
Map of the Southern African coastline showing some of the landmarks referred to in species range statements. The list of marine heterobranch gastropods of South Africa is a list of saltwater mollusc species that form a part of the molluscan fauna of South Africa.
This clade that had resulted repeatedly in molecular studies with still limited "lower heterobranch" taxon sampling, either in a derived position or as a basal offshoot within Euthyneura. [3] A recent molecular phylogeny on Acteonoidea suggest a common origin with lower heterobranch Rissoelloidea and a sister group relationship to Nudipleura.
Ellobiida mostly comprise snails, but also a single slug genus and a limpet genus (Trimusculus). They are distributed from the marine upper littoral to moist terrestrial habitats. The conctractile pneustome is located on the right side of the body (quite posteriorly in Otina ) and the pallial cavity functions as a lung.
Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromolluscs.
Leucotina is a genus of small sea snails, marine heterobranch gastropod molluscs or micromolluscs in the family Amathinidae. [1] Species. Leucotina adamsi Kuroda ...
Amathina tricarinata is a species of small sea snail, marine heterobranch gastropod mollusc or micromolluscs in the family Amathinidae. [2]
The Cornirostridae is a taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia. [1] [2] ... Heterobranch gastropods from ...