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remipedia
Remipedia is a class of blind crustaceans found in coastal aquifers which contain saline groundwater, with populations identified in almost every ocean basin so far explored, including in Australia, the Caribbean Sea, and the Atlantic Ocean. The first described remipede was the fossil ''Tesnusocaris goldichi'' (Lower Pennsylvanian), but, since 1979, at least seventeen living species have been identified with global distribution throughout the neo-tropical zone.
==Description==
Remipedes are long and comprise a head and an elongate trunk of up to forty-two similar body segments. The swimming appendages are lateral on each segment, and the animals swim on their backs. They are generally slow-moving. They have fangs connected to secretory glands, which inject a combination of digestive enzymes and venom into their prey. They have a generally primitive body plan in crustacean terms, and have been thought to be a basal, ancestral crustacean group. However, Fanenbruck ''et al.'' showed that at least one species, ''Godzilliognomus frondosus'', has a highly organized and well-differentiated brain, with a particularly large olfactory area which is a common feature for species that live in dark environments.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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