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Caudofoveata
Caudofoveata is a small class within the phylum Mollusca, also known as Chaetodermomorpha. The class is often combined with Solenogastres and termed Aplacophora, but some studies have cast doubt on the monophyly of this group. Anatomy Caudofoveata are small (1–30 mm), mainly deep sea molluscs. They are worm-like, lacking shells or distinct muscular feet; they instead have scales and calcareous spines called sclerites, for movement. Ecology Caudofoveates live by burrowing through soft sediment, and feed by lying vertically in the sediment with just the mouthparts exposed and taking in passing organic detritus. During sexual reproduction, the female produces eggs which are fertilized and brooded, and then the larvae swim freely. Diet Caudofoveates feed on foraminifera Foraminifera (; Latin for "hole bearers"; informally called "forams") are single-celled organisms, members of a phylum or class of amoeboid protists characterized by streaming granular ectoplasm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solenogastres
The Solenogastres (less often referred to as Neomeniomorpha), common name the solenogasters, are one class of small, worm-like, shell-less molluscs (Aplacophora), the other class being the Caudofoveata ( Chaetodermomorpha). MolluscaBase eds. (2021). MolluscaBase. Solenogastres. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=2094 on 2021-04-14 Some recent literature, and recent molecular evidence, indicates that the Aplacophora may be polyphyletic, and therefore these taxonomists divide Solenogastres and Caudofoveata into separate classes. Morphology In contrast to all other molluscan classes, the Aplacophora have no shell, and are instead covered by aragonitic sclerites (calcareous spicules), which can be solid or hollow. These spicules can be arranged perpendicular to one another within the cuticle to form a skeleton, or can stick up to form a palisade, or can lie flat against the cuticle. 80% of solenogaster specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusc
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 gastropods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aplacophora
Aplacophora is a presumably paraphyletic taxon. This is a class of small, deep-water, exclusively benthic, marine molluscs found in all oceans of the world. MolluscaBase eds. (2021). MolluscaBase. Aplacophora. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=411 on 2021-04-13 All known modern forms are shell-less: only some extinct primitive forms possessed valves. The group comprises the two clades Solenogastres (Neomeniomorpha) and Caudofoveata (Chaetodermomorpha), which between them contain 28 families and about 320 species. The aplacophorans are traditionally considered ancestral to the other mollusc classes. However, the relationship between the two aplacophoran groups and to the other molluscan classes and to each other is as yet unclear. Aplacophorans are cylindrical and worm-like in form, and most very small, being no longer than ; some species, however, can reach a length of . Habitat Caudofoveates generall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcidens
''Falcidens'' is one of three genera within the family Chaetodermatida; its radula consists of a single row of teeth which are mineralized in crystalline hydroxyapatite (a most unusual mineral in organisms), and its teeth are not periodically shed and replaced like in other molluscs. '' For details of the radula, see Radula#In caudofoveates.'' It contains the following species: * '' Falcidens acutargatus'' Salvini-Plawen, 1992 * '' Falcidens aequabilis'' Salvini-Plawen, 1972 * '' Falcidens caudatus'' Heath, 1918) * '' Falcidens chiastos'' Scheltema, 1989 * '' Falcidens crossotus'' Salvini-Plawen, 1968 * '' Falcidens gutturosus'' Kowalewsky, 1901) * '' Falcidens halanychi'' Schander, Scheltema & Ivanov, 2006 * '' Falcidens hartmanae'' Schwabl, 1961) * '' Falcidens hoffmanni'' Stork, 1939) * '' Falcidens indicus'' Stork, 1941) * '' Falcidens ingolfensis'' Salvini-Plawen, 1971 * '' Falcidens limifossorides'' Salvini-Plawen, 1986 * '' Falcidens liosqueameus'' Salvini-Plawen, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaetodermatidae
Chaetodermatidae is a family of molluscs belonging to the order Caudofoveata. Genera: * '' Chaetoderma'' Lovén, 1844 * ''Falcidens ''Falcidens'' is one of three genera within the family Chaetodermatida; its radula consists of a single row of teeth which are mineralized in crystalline hydroxyapatite (a most unusual mineral in organisms), and its teeth are not periodically ...'' Salvini-Plawen, 1968 * '' Furcillidens'' Scheltema, 1998 References {{Taxonbar, from=Q3788857 Aplacophorans Mollusc families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metachaetodermatidae
Limifossoridae is a family of molluscs belonging to the class Caudofoveata Caudofoveata is a small class within the phylum Mollusca, also known as Chaetodermomorpha. The class is often combined with Solenogastres and termed Aplacophora, but some studies have cast doubt on the monophyly of this group. Anatomy Caudofo ..., order Chaetodermatida. Genera: * '' Limifossor'' Heath, 1904 * '' Metachaetoderma'' Thiele, 1913 * '' Psilodens'' Salvini-Plawen, 1977 * '' Scutopus'' Salvini-Plawen, 1968 References {{Taxonbar, from=Q3794026 Aplacophorans Mollusc families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcidentidae
Chaetodermatidae is a family of molluscs belonging to the order Caudofoveata. Genera: * '' Chaetoderma'' Lovén, 1844 * ''Falcidens ''Falcidens'' is one of three genera within the family Chaetodermatida; its radula consists of a single row of teeth which are mineralized in crystalline hydroxyapatite (a most unusual mineral in organisms), and its teeth are not periodically ...'' Salvini-Plawen, 1968 * '' Furcillidens'' Scheltema, 1998 References {{Taxonbar, from=Q3788857 Aplacophorans Mollusc families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaetoderma (mollusc)
''Chaetoderma'' is a speciose genus of aplacophoran mollusc.Shuichi Shigeno, Takenori Sasaki, Gerhard Haszprunar (2007Central Nervous System of ''Chaetoderma japonicum'' (Caudofoveata, Aplacophora): Implications for Diversified Ganglionic Plans in Early Molluscan Evolution ''Biological Bulletin'' 213: 122-134. It has forty described species at present. Species * '' Chaetoderma abidjanense'' Scheltema, 1976 * '' Chaetoderma afanasjevi'' * '' Chaetoderma akkesiense'' * '' Chaetoderma araucanae'' * '' Chaetoderma argentum'' * '' Chaetoderma bacillum'' * '' Chaetoderma californicum'' * '' Chaetoderma canadense'' * '' Chaetoderma christikovi'' * '' Chaetoderma elegans'' Scheltema, 1976Gistle worm * '' Chaetoderma eruditum'' * '' Chaetoderma glaciale'' * '' Chaetoderma hancocki'' * '' Chaetoderma hawaiiense'' * '' Chaetoderma indicum'' * '' Chaetoderma intermedium'' * '' Chaetoderma japonicum'' * '' Chaetoderma kafanovi'' * '' Chaetoderma lucidum'' * '' Chaetoderma luitfriedi'' * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudofoveatus
''Chaetoderma'' is a speciose genus of aplacophoran mollusc.Shuichi Shigeno, Takenori Sasaki, Gerhard Haszprunar (2007Central Nervous System of ''Chaetoderma japonicum'' (Caudofoveata, Aplacophora): Implications for Diversified Ganglionic Plans in Early Molluscan Evolution ''Biological Bulletin'' 213: 122-134. It has forty described species at present. Species * '' Chaetoderma abidjanense'' Scheltema, 1976 * '' Chaetoderma afanasjevi'' * '' Chaetoderma akkesiense'' * '' Chaetoderma araucanae'' * '' Chaetoderma argentum'' * '' Chaetoderma bacillum'' * '' Chaetoderma californicum'' * '' Chaetoderma canadense'' * '' Chaetoderma christikovi'' * '' Chaetoderma elegans'' Scheltema, 1976Gistle worm * '' Chaetoderma eruditum'' * '' Chaetoderma glaciale'' * '' Chaetoderma hancocki'' * '' Chaetoderma hawaiiense'' * '' Chaetoderma indicum'' * '' Chaetoderma intermedium'' * '' Chaetoderma japonicum'' * '' Chaetoderma kafanovi'' * '' Chaetoderma lucidum'' * '' Chaetoderma luitfriedi'' * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limifossoridae
Limifossoridae is a family of molluscs belonging to the class Caudofoveata Caudofoveata is a small class within the phylum Mollusca, also known as Chaetodermomorpha. The class is often combined with Solenogastres and termed Aplacophora, but some studies have cast doubt on the monophyly of this group. Anatomy Caudofo ..., order Chaetodermatida. Genera: * '' Limifossor'' Heath, 1904 * '' Metachaetoderma'' Thiele, 1913 * '' Psilodens'' Salvini-Plawen, 1977 * '' Scutopus'' Salvini-Plawen, 1968 References {{Taxonbar, from=Q3794026 Aplacophorans Mollusc families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foraminifera
Foraminifera (; Latin for "hole bearers"; informally called "forams") are single-celled organisms, members of a phylum or class of amoeboid protists characterized by streaming granular Ectoplasm (cell biology), ectoplasm for catching food and other uses; and commonly an external shell (called a "Test (biology), test") of diverse forms and materials. Tests of chitin (found in some simple genera, and Textularia in particular) are believed to be the most primitive type. Most foraminifera are marine, the majority of which live on or within the seafloor sediment (i.e., are benthos, benthic), while a smaller number float in the water column at various depths (i.e., are planktonic), which belong to the suborder Globigerinina. Fewer are known from freshwater or brackish conditions, and some very few (nonaquatic) soil species have been identified through molecular analysis of small subunit ribosomal DNA. Foraminifera typically produce a test (biology), test, or shell, which can have eithe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claviderma
''Claviderma'' is a genus of molluscs belonging to the family Prochaetodermatidae. The species of this genus are found on the coasts of Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ... and Australia. Species: *'' Claviderma amplum'' *'' Claviderma australe'' *'' Claviderma brevicaudatum'' *'' Claviderma compactum'' *'' Claviderma crassum'' *'' Claviderma gagei'' *'' Claviderma gladiatum'' *'' Claviderma laticarinatum'' *'' Claviderma mexicanum'' *'' Claviderma tricosum'' *'' Claviderma virium'' References {{Taxonbar, from=Q18583528 Molluscs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
