Prosobranchia

Shells from a variety of prosobranch gastropods, from Ernst Haeckel's Artforms of Nature, 1904.

Three views of a shell of a Harpa species, a prosobranch gastropod.

Chicoreus ramosus, a prosobranch gastropod.

Not to be confused with the bivalve order Protobranchia.

Prosobranchia was a large taxonomic subclass of sea snails, land snails and freshwater snails. This taxon of gastropods dates back to the 1920s. It has however been proven to be polyphyletic (consisting of more than one lineage of descent). Generally speaking in biology taxonomy is required to reflect phylogeny, in other words the classification of a group must reflect its evolutionary descent, as far as that is known, so the taxon Prosobranchia is no longer considered suitable to be used.

单词	Streptoneura
释义	Streptoneura 英语百科 Prosobranchia Not to be confused with the bivalve order Protobranchia. Prosobranchia was a large taxonomic subclass of sea snails, land snails and freshwater snails. This taxon of gastropods dates back to the 1920s. It has however been proven to be polyphyletic (consisting of more than one lineage of descent). Generally speaking in biology taxonomy is required to reflect phylogeny, in other words the classification of a group must reflect its evolutionary descent, as far as that is known, so the taxon Prosobranchia is no longer considered suitable to be used.
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Streptoneura

Prosobranchia