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Cavolinioidea
The superfamily Cavolinioidea is the most speciose group of sea butterflies. They belong to the suborder Euthecosomata. MolluscaBase eds. (2021). MolluscaBase. Cavolinioidea Gray, 1850 (1815). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=411903 on 2021-03-11 Sea butterflies (thecosomata) are pelagic marine gastropods, so called because they swim by flapping their wing-like parapodia. Distribution These sea butterflies are circumglobal, carried by the sea currents to all the seas of the world. Habitat Cavoliniids prefer deep waters, from 100 m up to 2,000 m. They do best in warm oceanic water. Shell description Species in this superfamily have a calcareous, bilaterally symmetrical conical or globular shell. Identification of juveniles is difficult as the juvenile shells differ greatly from adults. Life habits Towards the anterior end of the animal, two parapodia (winglike flat lobules) protrude between each h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cavolinioidea
The superfamily Cavolinioidea is the most speciose group of sea butterflies. They belong to the suborder Euthecosomata. MolluscaBase eds. (2021). MolluscaBase. Cavolinioidea Gray, 1850 (1815). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=411903 on 2021-03-11 Sea butterflies (thecosomata) are pelagic marine gastropods, so called because they swim by flapping their wing-like parapodia. Distribution These sea butterflies are circumglobal, carried by the sea currents to all the seas of the world. Habitat Cavoliniids prefer deep waters, from 100 m up to 2,000 m. They do best in warm oceanic water. Shell description Species in this superfamily have a calcareous, bilaterally symmetrical conical or globular shell. Identification of juveniles is difficult as the juvenile shells differ greatly from adults. Life habits Towards the anterior end of the animal, two parapodia (winglike flat lobules) protrude between each h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praecuvierinidae
The Praecuvierinidae are a family of extinct, small, floating sea snails, pelagic marine opisthobranch gastropod mollusks in the superfamily Cavolinioidea. Genera * Genus '' Praecuvierina'' Janssen, 2005 ** '' Praecuvierina lura'' (Hodgkinson, in Hodgkinson, Garvie & Bé, 1992) - from Eocene, Lutetian of the United States * Genus '' Texacuvierina'' Janssen, 2005 ** '' Texacuvierina gutta'' (Hodgkinson, in Hodgkinson, Garvie & Bé, 1992) - from Eocene, Bartonian The Bartonian is, in the ICS's geologic time scale, a stage or age in the middle Eocene Epoch or Series. The Bartonian Age spans the time between . It is preceded by the Lutetian and is followed by the Priabonian Age. Stratigraphic defini ... of the United States References {{Taxonbar, from=Q7237511 Cavolinioidea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Butterflies
Sea butterflies, scientific name Thecosomata (thecosomes, "case / shell-body"), are a taxonomic suborder of small pelagic swimming sea snails. They are holoplanktonic opisthobranch gastropod mollusks. Most Thecosomata have some form of calcified shell, although it is often very light and / or transparent. The sea butterflies include some of the world's most abundant gastropod species, and because of their large numbers are an essential part of the food chain, and a significant contributor to the oceanic carbon cycle. The sea butterflies are included in the Pteropoda order, and are also included in the informal group Opisthobranchia. Morphology Sea butterflies float and swim freely in the water, and are carried along with the currents. This has led to a number of adaptations in their bodies. The shell and the gill have disappeared in several families. Their gastropodal foot has taken the form of two wing-like lobes, or ''parapodia'', which propel the animal through the sea by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaerocinidae
Sphaerocinidae is an extinct taxonomic family of fossil sea snails, sea butterflies, marine opisthobranch gastropod mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...s within the superfamily Cavolinioidea. References Cavolinioidea {{paleo-gastropod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cavoliniidae
The family Cavoliniidae is a taxonomic group of small floating sea snails, pelagic marine opisthobranch gastropod mollusks.Gofas, S. (2011). Cavoliniidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=23000 on 30 April 2011 This family is part of a larger group which is commonly known as the sea butterflies because they swim by flapping what appear to be small "wings". Distribution This family of sea butterflies are circumglobal, carried by the sea currents to all the seas of the world. Habitat Cavoliniids prefer deep waters, from 100 m down to 2,000 m. They do best in warm oceanic water. Life habits Towards the anterior end of the animal, two parapodia (winglike flat lobules) protrude between each half of the shell. The parapodia enable these sea butterflies to float along in the water currents, using slow flapping movements. The parapodia are also covered with cilia, which produce a minute water current t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cliidae
The family Cliidae is a taxonomic group of small floating sea snails, pelagic marine opisthobranch gastropod mollusks.Bouchet, P. (2011). Cliidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=411904 on 2012-07-24 This family name has for a long time been known as Clioidae, or the subfamily Clioinae Jeffreys, 1869 belonging to the family Cavoliniidae, each time with the type genus ''Clio'' Linnaeus, 1767. Unfortunately this is often confused with another molluscan family Clionidae, which has the type genus ''Clione''. The International Commission on Zoological Nomenclature (ICZN) has therefore changed the name back to its original spelling Cliidae Jeffreys, 1869, type genus ''Clio'' Linnaeus, 1767 Genera * ''Clio In Greek mythology, Clio ( , ; el, Κλειώ), also spelled Kleio, is the muse of history, or in a few mythological accounts, the muse of lyre playing. Etymology Clio's name is etymologically der ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Of The Gastropoda (Bouchet & Rocroi, 2005)
The taxonomy of the Gastropoda as it was revised in 2005 by Philippe Bouchet and Jean-Pierre Rocroi is a system for the scientific classification of gastropod mollusks. (Gastropods are a taxonomic class of animals which consists of snails and slugs of every kind, from the land, from freshwater, and from saltwater.) The paper setting out this taxonomy was published in the journal ''Malacologia''. The system encompasses both living and extinct groups, as well as some fossils whose classification as gastropods is uncertain. The Bouchet & Rocroi system was the first complete gastropod taxonomy that primarily employed the concept of clades, and was derived from research on molecular phylogenetics; in this context a clade is a "natural grouping" of organisms based upon a statistical cluster analysis. In contrast, most of the previous overall taxonomic schemes for gastropods relied on morphological features to classify these animals, and used taxon ranks such as order, superorder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyalocylidae
The family Hyalocylidae is a taxonomic group of small floating sea snails, pelagic marine opisthobranch gastropod mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...s.MolluscaBase eds. (2021). MolluscaBase. Hyalocylidae A. W. Janssen, 2020. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1449178 on 2021-03-11 Genera * '' Hyalocylis'' Fol, 1875 * † '' Praehyalocylis'' Korobkov, 1962 ;Synonyms: * ''Hyalocylix'' P. Fischer, 1883: synonym of ''Hyalocylis'' Fol, 1875 (unjustified emendation) References * Rang, M., 1828. Notice sur quelques mollusques nouveaux appartenant à la classe des Ptéropodes et établissement et monographie du sous-genre Creseis. Annales des Sciences Naturelles 13: 302–319, pls17-18 * va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euthecosomata
''Euthecosomata'' is a taxonomic unit used to classify sea snails. It is a suborder of the order Pteropoda. MolluscaBase eds. (2021). MolluscaBase. Euthecosomata. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=23020 on 2021-03-11 Superfamilies * Cavolinioidea Gray, 1850 (1815) * Limacinoidea Gray, 1840 References * Meisenheimer J. (1905). Pteropoda. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer "Valdivia" 1898-1899 9(1): 1-314, pl. 1-2 * Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526 External linksWoRMS info {{Taxonbar, from=Q5414457 Gastropod taxonomy Protostome infraorders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cilium
The cilium, plural cilia (), is a membrane-bound organelle found on most types of eukaryotic cell, and certain microorganisms known as ciliates. Cilia are absent in bacteria and archaea. The cilium has the shape of a slender threadlike projection that extends from the surface of the much larger cell body. Eukaryotic flagella found on sperm cells and many protozoans have a similar structure to motile cilia that enables swimming through liquids; they are longer than cilia and have a different undulating motion. There are two major classes of cilia: ''motile'' and ''non-motile'' cilia, each with a subtype, giving four types in all. A cell will typically have one primary cilium or many motile cilia. The structure of the cilium core called the axoneme determines the cilium class. Most motile cilia have a central pair of single microtubules surrounded by nine pairs of double microtubules called a 9+2 axoneme. Most non-motile cilia have a 9+0 axoneme that lacks the central pair o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euopisthobranchia
Euopisthobranchia is a taxonomic clade of snails and slugs in the clade Heterobranchia within the clade Euthyneura. This clade was established as a new taxon by Jörger et al. in October 2010. Euopisthobranchia is a monophyletic portion of the Opisthobranchia as that taxon was traditionally defined but is not a replacement name for that group as several marine opisthobranch orders including Nudibranchia, Sacoglossa and Acochlidiacea are not included. Euopisthobranchia consist of the following taxa: * Umbraculoidea * Anaspidea * Runcinacea * Pteropoda * Cephalaspidea s.s. Gizzard Previous studies discussed the gizzard (i.e. a muscular oesophageal crop lined with cuticula) with gizzard plates as homologous apomorphic structures supporting a clade composed of Cephalaspidea s.s., Pteropoda and Anaspidea. A gizzard with gizzard plates probably originated in herbivorous taxa in which it worked like a grinding mill, thus might be secondarily reduced in carnivorous groups within ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermaphrodite
In reproductive biology, a hermaphrodite () is an organism that has both kinds of reproductive organs and can produce both gametes associated with male and female sexes. Many Taxonomy (biology), taxonomic groups of animals (mostly invertebrates) do not have separate sexes. In these groups, hermaphroditism is a normal condition, enabling a form of sexual reproduction in which either partner can act as the female or male. For example, the great majority of tunicata, tunicates, pulmonate molluscs, opisthobranch, earthworms, and slugs are hermaphrodites. Hermaphroditism is also found in some fish species and to a lesser degree in other vertebrates. Most plants are also hermaphrodites. Animal species having different sexes, male and female, are called Gonochorism, gonochoric, which is the opposite of hermaphrodite. There are also species where hermaphrodites exist alongside males (called androdioecy) or alongside females (called gynodioecy), or all three exist in the same species ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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