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Cliopsidae
The Cliopsidae, common name sea angels, are a taxonomic family of small, free-swimming sea slugs, pelagic marine opisthobranch gastropod mollusks in the order Opisthobranchia. As is the case in all gymnosome pteropods, these sea angels lack a shell except during an early embryonic stage. The small lateral wing-like flaps (parapoda) are used in a slow swimming mode. The foot is reduced to three small median lobes. Genera and species Genera and species within the family Cliopsidae include: Genus ''Cliopsis'' Troschel, 1854 * ''Cliopsis krohnii'' Troschel, 1854 Troschel, Beiträge zur Kenntniss der Pteropoden, Archiv f. Naturgesch., Jáhrg. xx. p. 222, p1. x. figs. 2-4. Genus ''Pruvotella'' * ''Pruvotella danae'' Pruvot-Fol, 1942 ** Distribution : Bermuda ) , anthem = "God Save the King" , song_type = National song , song = "Hail to Bermuda" , image_map = , map_caption = , image_map2 = , mapsize2 = , map_caption2 = , subdivision_type = Sovereign s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pruvotella
The Cliopsidae, common name sea angels, are a taxonomic family of small, free-swimming sea slugs, pelagic marine opisthobranch gastropod mollusks in the order Opisthobranchia. As is the case in all gymnosome pteropods, these sea angels lack a shell except during an early embryonic stage. The small lateral wing-like flaps (parapoda) are used in a slow swimming mode. The foot is reduced to three small median lobes. Genera and species Genera and species within the family Cliopsidae include: Genus '' Cliopsis'' Troschel, 1854 * ''Cliopsis krohnii ''Cliopsis'' Troschel, 1854 is a genus of sea angels belonging to the family Cliopsidae. It is monotypic, being represented by the single species ''Cliopsis krohnii''. Taxonomy The Marine Species Identification Portal recognizes three morphs : ...'' Troschel, 1854 Troschel, Beiträge zur Kenntniss der Pteropoden, Archiv f. Naturgesch., Jáhrg. xx. p. 222, p1. x. figs. 2-4. Genus ''Pruvotella'' * '' Pruvotella danae'' Pruvot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pruvotella Danae
The Cliopsidae, common name sea angels, are a taxonomic family of small, free-swimming sea slugs, pelagic marine opisthobranch gastropod mollusks in the order Opisthobranchia. As is the case in all gymnosome pteropods, these sea angels lack a shell except during an early embryonic stage. The small lateral wing-like flaps (parapoda) are used in a slow swimming mode. The foot is reduced to three small median lobes. Genera and species Genera and species within the family Cliopsidae include: Genus '' Cliopsis'' Troschel, 1854 * ''Cliopsis krohnii ''Cliopsis'' Troschel, 1854 is a genus of sea angels belonging to the family Cliopsidae. It is monotypic, being represented by the single species ''Cliopsis krohnii''. Taxonomy The Marine Species Identification Portal recognizes three morphs : ...'' Troschel, 1854 Troschel, Beiträge zur Kenntniss der Pteropoden, Archiv f. Naturgesch., Jáhrg. xx. p. 222, p1. x. figs. 2-4. Genus ''Pruvotella'' * '' Pruvotella danae'' Pruvot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cliopsis
''Cliopsis'' Troschel, 1854 is a genus of sea angels belonging to the family Cliopsidae. It is monotypic, being represented by the single species ''Cliopsis krohnii''. Taxonomy The Marine Species Identification Portal recognizes three morphs : * ''Cliopsis krohni'' morpha ''grandis'' Boas, 1886; body length : 40 mm * ''Cliopsis krohni'' morpha ''krohni'' Troschel, 1854; body length : 24 mm * ''Cliopsis krohni'' morpha ''modesta'' (Pelseneer, 1887); body length : 3 mm Description ''Cliopsis krohnii'' has a somewhat long, flabby, gelatinous body with a bluish aspect. The head is rather small with the nuchal tentacles much developed. The posterior gill possesses four distinct radiating hexagonal crests lacking foldings or fringes. The foot is reduced to three small median lobes. The anterior lobes of the foot show a posterior right angle. The posterior end of the foot has a folded tubercle that is not divided by longitudinal wrinkle in the middle. The distal extr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cliopsis Krohnii
''Cliopsis'' Troschel, 1854 is a genus of sea angels belonging to the family Cliopsidae. It is monotypic, being represented by the single species ''Cliopsis krohnii''. Taxonomy The Marine Species Identification Portal recognizes three morphs : * ''Cliopsis krohni'' morpha ''grandis'' Boas, 1886; body length : 40 mm * ''Cliopsis krohni'' morpha ''krohni'' Troschel, 1854; body length : 24 mm * ''Cliopsis krohni'' morpha ''modesta'' (Pelseneer, 1887); body length : 3 mm Description ''Cliopsis krohnii'' has a somewhat long, flabby, gelatinous body with a bluish aspect. The head is rather small with the nuchal tentacles much developed. The posterior gill possesses four distinct radiating hexagonal crests lacking foldings or fringes. The foot is reduced to three small median lobes. The anterior lobes of the foot show a posterior right angle. The posterior end of the foot has a folded tubercle that is not divided by longitudinal wrinkle in the middle. The distal extr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Angel
Sea angels (clade Gymnosomata) are a large group of small free-swimming sea slugs, not to be confused with Cnidarians (Jellyfish and other similar creatures), classified into six different families. They are pelagic opisthobranchs in the clade Gymnosomata within the larger mollusc clade Heterobranchia. Sea angels were previously referred to as a type of pteropod. Sea angels are also sometimes known as "cliones" but this is potentially misleading because the family Clionidae is just one of the families within this clade. Recent molecular data suggest the Gymnosomata form a sister group to the Thecosomata (other planktonic, weakly or nonmineralized gastropods), but this long-standing hypothesis has also had some recent detractors. Fossils of the group go back to the Middle Frasnian stage of the Late Devonian period. Distribution These organisms have a wide geographic range, from polar regions, under sea ice, to equatorial (tropic) seas. Description In this clade, the foot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alice Pruvot-Fol
Alice Pruvot-Fol (4 August 1873 – 28 March 1972) was a French opisthobranch malacologist. She was the author of many new species, mostly described on the basis of preserved animals. She described a new species (''Nembrotha rutilans'', Pruvot-Fol, 1931) on the basis of a painted illustration in a book by William Saville-Kent (1893) entitled ''The Great Barrier Reef of Australia''. She continued working and naming new species until late in her life. Even in 1962, when she was 89 years old, she named ''Phyllidia pulitzeri''. Species Some of the species described by her: *'' Aldisa banyulensis'' Pruvot-Fol, 1951 *'' Aplysiopsis formosa'' Pruvot-Fol *'' Atagema gibba'' Pruvot-Fol *'' Atagema rugosa'' Pruvot-Fol, 1951 *'' Chelidonura africana'' Pruvot-Fol *'' Chromodoris kuniei'' Pruvot-Fol, 1930 *''Cumanotus cuenoti'' Pruvot-Fol, 1948 *'' Doriopsilla rarispinosa'' Pruvot-Fol, 1951 *''Elysia babai'' Pruvot-Fol, 1945 *'' Elysia mercieri'' Pruvot-Fol, 1930 *'' Facelina dubia'' Pru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryo
An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells known as blastomeres. The blastomeres are arranged as a solid ball that when reaching a certain size, called a morula, takes in fluid to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals. The mammalian blastocyst hatches before implantating into the endometrial lining of the womb. Once implanted the embryo will continue its development through the next stages of gastrulation, neurulation, and organogenesis. Gastrulation is the formation of the three germ layers that will form all of the different parts of the body. Neurulation forms the nervous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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). Opist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, wikt:ordo#Latin, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
