subclass Opisthobranchia

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Noun

subclass Opisthobranchia - gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares

Opisthobranchia

class Gasteropoda, class Gastropoda, Gasteropoda, Gastropoda - snails and slugs and their relatives

Nudibranchia, order Nudibranchia - comprising numerous marine gastropod mollusks lacking a shell in the adult state and usually having a body like a slug

class - (biology) a taxonomic group containing one or more orders

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class Gasteropoda class Gastropoda Gasteropoda Gastropoda Nudibranchia opisthobranch Opisthobranchia order Nudibranchia pteropod sea hare			subclass Copepoda subclass Crossopterygii subclass Diapsida subclass Dibranchia subclass Dibranchiata subclass Dilleniidae subclass Dipnoi subclass Discomycetes subclass Elasmobranchii subclass Entomostraca subclass Euascomycetes subclass Euryalida subclass Eutheria subclass Exopterygota subclass Hamamelidae subclass Heterobasidiomycetes subclass Holocephali subclass Homobasidiomycetes subclass Infusoria subclass Lepidosauria subclass Liliidae subclass Magnoliidae subclass Malacostraca subclass Metatheria subclass Ophiurida subclass Opisthobranchia subclass Ostracoda subclass Pantotheria subclass Phytomastigina subclass Prototheria subclass Rhizopoda subclass Rosidae subclass Selachii subclass Synapsida subclass Teleostei subclass Telosporidia subclass Zoomastigina subclavian subclavian artery subclavian vein subclimax subclinical subclinical absence Subcolumnar subcommission subcommittee subcompact subcompact car subcomponent Subcompressed Subconcave			Subclass Data File subclass Diapsida subclass Dibranchia subclass Dibranchiata subclass Dilleniidae subclass Dipnoi subclass Discomycetes subclass Elasmobranchii subclass Entomostraca subclass Euascomycetes subclass Euryalida subclass Eutheria subclass Exopterygota subclass Hamamelidae subclass Heterobasidiomycetes subclass Holocephali subclass Homobasidiomycetes subclass Infusoria subclass Lepidosauria subclass Liliidae subclass Magnoliidae subclass Malacostraca subclass Metatheria subclass Ophiurida subclass Opisthobranchia subclass Ostracoda subclass Pantotheria subclass Phytomastigina subclass Prototheria subclass Rhizopoda subclass Rosidae subclass Selachii subclass Synapsida subclass Teleostei subclass Telosporidia subclass Zoomastigina Subclasses Subclasses Subclasses Subclasses Subclasses Subclassing Subclassing Subclassing Subclassing Subclassing subclavian subclavian subclavian ansa Subclavian arteries Subclavian arteries Subclavian arteries subclavian artery subclavian artery subclavian artery

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