subclass Opisthobranchia

subclass Opisthobranchia
noun
gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares
Syn: ↑Opisthobranchia
Hypernyms: ↑class
Member Holonyms: ↑Gastropoda, ↑class Gastropoda, ↑Gasteropoda, ↑class Gasteropoda
Member Meronyms: ↑Nudibranchia, ↑order Nudibranchia

Useful english dictionary. 2012.

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  • Opisthobranchia — noun gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares • Syn: ↑subclass Opisthobranchia • Hypernyms: ↑class • Member Holonyms: ↑Gastropoda, ↑class Gastropoda, ↑ …   Useful english dictionary

  • Opisthobranchia — Temporal range: Carboniferous–Recent[1] …   Wikipedia

  • mollusk — molluskan, molluscan /meuh lus keuhn/, adj., n. mollusklike, adj. /mol euhsk/, n. any invertebrate of the phylum Mollusca, typically having a calcareous shell of one, two, or more pieces that wholly or partly enclose the soft, unsegmented body,… …   Universalium

  • gastropod — /gas treuh pod /, n. 1. any mollusk of the class Gastropoda, comprising the snails, whelks, slugs, etc. adj. 2. Also, gastropodous /ga strop euh deuhs/. belonging or pertaining to the gastropods. [1820 30; < NL Gast(e)ropoda a class of mollusks.… …   Universalium

  • nudibranch — /nooh deuh brangk , nyooh /, n. a shell less, marine snail of the suborder Nudibranchia, having external, often branched respiratory appendages on the back and sides. [1835 45; < F nudibranche, equiv. to nudi NUDI + branche gill ( < L branchia… …   Universalium

  • opisthobranch — /euh pis theuh brangk /, n. 1. any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles. adj. 2. of or pertaining to… …   Universalium

  • Taxonomy of commonly fossilised invertebrates — Although the phylogenetic classification of sub vertebrate animals (both extinct and extant) remains a work in progress, the following taxonomy attempts to be useful by combining both traditional (old) and new (21st century) paleozoological… …   Wikipedia

  • class Gasteropoda — noun snails and slugs and their relatives • Syn: ↑Gastropoda, ↑class Gastropoda, ↑Gasteropoda • Hypernyms: ↑class • Member Holonyms: ↑Mollusca, ↑phylum Mollusca …   Useful english dictionary

  • class Gastropoda — noun snails and slugs and their relatives • Syn: ↑Gastropoda, ↑Gasteropoda, ↑class Gasteropoda • Hypernyms: ↑class • Member Holonyms: ↑Mollusca, ↑phylum Mollusca …   Useful english dictionary

  • Gasteropoda — noun snails and slugs and their relatives • Syn: ↑Gastropoda, ↑class Gastropoda, ↑class Gasteropoda • Hypernyms: ↑class • Member Holonyms: ↑Mollusca, ↑phylum Mollusca …   Useful english dictionary

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