What does opisthobranchia mean?

Definitions for opisthobranchia
opistho·branchi·a

This dictionary definitions page includes all the possible meanings, example usage and translations of the word opisthobranchia.

Princeton's WordNet

  1. Opisthobranchia, subclass Opisthobranchianoun

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

Wikipedia

  1. Opisthobranchia

    Opisthobranchs () is now an informal name for a large and diverse group of specialized complex gastropods which used to be united in the subclass Opisthobranchia. That taxon is no longer considered to represent a monophyletic grouping.Euopisthobranchia is a taxon containing a revised collection of opisthobranchs, and that taxon is considered monophyletic. Euopisthobranchia does not include some "traditional" opisthobranchs such as the Sacoglossa and the Acochlidiacea. The subclass Heterobranchia now contains all the species which used to be assigned to Opisthobranchia, plus all the species in the Pulmonata. The subclass Opisthobranchia included species in the order Cephalaspidea (bubble shells and headshield slugs), the sacoglossans, anaspidean sea hares, pelagic sea angels, sea butterflies, and many families of the Nudibranchia.Opisthobranch means "gills behind" (and to the right) of the heart. In contrast, Prosobranch means gills in front (of the heart). Opisthobranchs are characterized by two pairs of tentacles and a single gill behind and to the right of the heart. With the lack of a heavily mineralized shell, there has been very little fossil record of the group. However, molecular clock studies have suggested that Opisthobranchia emerged as early as the Carboniferous.

ChatGPT

  1. opisthobranchia

    Opisthobranchia is a subclass within the class Gastropoda, which is a large taxonomic class of marine animals more commonly known as sea snails and sea slugs. This subclass predominantly contains various types of sea slugs, most of which have undergone detorsion or the loss of torsion produced during the larval stage, and have a reduced or absent shell. The term "Opisthobranchia" comes from the Greek words "opistho" meaning 'behind' and "branchia" meaning 'gills', which refers to the location of the gills in these animals, being situated posterially, towards the rear of the body.

Wikidata

  1. Opisthobranchia

    Opisthobranchs are a large and diverse group of specialized complex marine gastropods previously united under Opisthobranchia within the Heterobranchia, but no longer considered to represent a monophyletic grouping. Euopisthobranchia is a revised collection of opisthobranchs that is monophyletic, but this group leaves out some "traditional" opisthobranchs. The Opisthobranchia includes a number of species in the order Cephalaspidea, the sacoglossans, the anaspidean sea hares, the pelagic sea angels, the sea butterflies, and many families of Nudibranchia. Opisthobranch means "gills behind" of the heart. In contrast, Prosobranch means gills in front. Opisthobranchs are characterized by two pairs of tentacles and a single gill behind and to the right of the heart. Opisthobranchia are known from as early as the Carboniferous.

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Numerology

  1. Chaldean Numerology

    The numerical value of opisthobranchia in Chaldean Numerology is: 1

  2. Pythagorean Numerology

    The numerical value of opisthobranchia in Pythagorean Numerology is: 5

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"opisthobranchia." Definitions.net. STANDS4 LLC, 2024. Web. 29 Mar. 2024. <https://www.definitions.net/definition/opisthobranchia>.

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