Hemiarthrum

	Hemiarthrum ''Hemiarthrum setulosum'' is a species of chiton in the family Hanleyidae, the only member of the genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ... ''Hemiarthrum''. Hemiarthrum setulosum represent one of the five major clades of chitons that are living. Hemiarthrim setulosum has an incomplete lateral tract in the nerve ring. They are the only known species to have an incomplete one. Sumner‐Rooney, Lauren, and Julia D. Sigwart. "Do chitons have a brain? New evidence for diversity and complexity in the polyplacophoran central nervous system." Journal of morphology 279.7 (2018): 936-949. References Hanleyidae Monotypic mollusc genera {{Chiton-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Chiton Chitons () are marine molluscs of varying size in the class Polyplacophora (), formerly known as Amphineura. About 940 extant and 430 fossil species are recognized. They are also sometimes known as gumboots or sea cradles or coat-of-mail shells or suck-rocks, or more formally as loricates, polyplacophorans, and occasionally as polyplacophores. Chitons have a shell composed of eight separate shell plates or valves. These plates overlap slightly at the front and back edges, and yet articulate well with one another. Because of this, the shell provides protection at the same time as permitting the chiton to flex upward when needed for locomotion over uneven surfaces, and even allows the animal to curl up into a ball when dislodged from rocks. The shell plates are encircled by a skirt known as a girdle. Habitat Chitons live worldwide, from cold waters through to the tropics. They live on hard surfaces, such as on or under rocks, or in rock crevices. Some species live quite hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Chitonida Chitonida is an order of chitons. Taxonomy * Suborder Chitonina Thiele, 1910 * Superfamily Chitonoidea Rafinesque, 1815 Family † Ochmazochitonidae Hoare et Smith, 1984 * †'' Ochmazochiton'' Hoare et Smith, 1984 Family Ischnochitonidae Dall, 1889 * ''Ischnochiton'' Gray, 1847 * '' Stenochiton'' Adams et Angas, 1864 * ''Stenoplax'' Carpenter) Dall, 1879 * ''Lepidozona'' Pilsbry, 1892 * '' Stenosemus'' Middendorff, 1847 * ''Subterenochiton'' Iredale et Hull, 1924 * ''Thermochiton'' Saito et Okutani, 1990 * '' Connexochiton'' Kaas, 1979 * '' Tonicina'' Thiele, 1906 Family Callistoplacidae Pilsbry, 1893 * '' Ischnoplax'' Dall, 1879 * ''Callistochiton'' Carpenter) Dall * ''Callistoplax'' Dall, 1882 * '' Ceratozona'' Dall, 1882 * '' Calloplax'' Thiele, 1909 Family Chaetopleuridae Plate, 1899 * '' Chaetopleura'' Shuttleworth, 1853 * ''Dinoplax'' Carpenter MS, Dall, 1882http://www.marinespecies.org/aphia.php search term Dinopl ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
picture info	Animal Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	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]
	Lepidopleurina Lepidopleurina is a suborder of polyplacophoran Chitons () are marine (ocean), marine molluscs of varying size in the class (biology), class Polyplacophora (), formerly known as Amphineura. About 940 Extant taxon, extant and 430 fossil species are recognized. They are also sometimes known ... molluscs. It includes both extinct and Extant taxon, extant species. References Chitons Mollusc suborders {{paleo-mollusc-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]