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Gnathostomata is traditionally a infraphylum, broken into three top-level groupings: Chondrichthyes, or the cartilaginous fish; Placodermi, an extinct grade of armored fish; and Teleostomi, which includes the familiar classes of bony fish, birds, mammals, reptiles, and amphibians. Some classification systems have used the term Amphirhina.
Human gnathostomiasis is an infection by the migrating third-stage larvae of any of five species of Gnathostoma.The most common cause in Asia is G. spinigerum, and the most common cause in the Americas is G. binucleatum.
Gnathostoma is a genus of parasitic nematodes.The species Gnathostoma spinigerum and Gnathostoma hispidum can cause gnathostomiasis.. Neurognathostomiasis occurs in the USA. [2]
Gnathostoma spinigerum is a parasitic nematode that causes gnathostomiasis in humans, also known as its clinical manifestations are creeping eruption, larva migrans, Yangtze edema, Choko-Fuschu Tua chid and wandering swelling.
In all jawed fish (gnathostomes), the first arch pair (mandibular arches) develops into the jaw, the second gill arches (the hyoid arches) develop into the hyomandibular complex (which supports the back of the jaw and the front of the gill series), and the remaining posterior arches (simply called branchial arches) support the gills.
Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes). They are currently considered to represent a paraphyletic grade of various fish lineages basal to extant Chondrichthyes, which includes living sharks, rays, and chimaeras.
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Articles related to the Gnathostomata, the jawed vertebrates. Gnathostome diversity comprises roughly 60,000 species, which accounts for 99% of all living vertebrates. Gnathostome diversity comprises roughly 60,000 species, which accounts for 99% of all living vertebrates.