Remipedia is a class of blind crustaceans found in deep caves connected to salt water, in Australia and the Caribbean Sea. The first described remipede was the fossil Tesnusocaris goldichi (Lower Pennsylvanian), but, since 1979, about a dozen living species have been found. These species have been assigned to one order Nectiopoda and two families Godzilliidae and Speleonidae. Classes Class Branchiopoda Subclass Phyllopoda Subclass Sarsostraca Class Remipedia Order Enantiopoda Order Nectiopoda Class Cephalocarida Order Brachypoda Class Maxillopoda Subclass Mystacocarida Subclass Copepoda Subclass Branchiura Subclass Pentastomida Subclass Tantulocarida Subclass Thecostraca Infraclass Cirripedia Class Ostracoda Order Metacopina Subclass Myodocopa Subclass Podocopa Class Malacostraca Subclass Eumalacostraca Subclass Hoplocarida Subclass Phyllocarida The... Map of Central America and the Caribbean The Caribbean Sea is a tropical body of water adjacent to the Atlantic Ocean and southeast of the Gulf of Mexico. ... Binomial name Tesnusocaris goldichi † Brooks, 1955 Tesnusocaris goldichi was a species of crustacean that lived in the Pennsylvanian period, the only representative of the extinct Order Enantiopoda. ... The Early Pennsylvanian (also known as the Lower Pennsylvanian) is the first of three subepochs of the Pennsylvanian epoch of the Carboniferous period. ... Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ...

Members of this group are colourless with a head and up to thirty-two similar body segments composing an elongate trunk. The swimming appendages are lateral on each segment, and the animals swim on their backs. They are generally slow-moving, and use fangs and poisonous glands to kill 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. (2004) showed that at least one species, Godzilliognomus frondosus, has a highly organised and well-differentiated brain, with a particularly large olfactory area (not surprising in a species that lives essentially without light). The size and complexity of the brain suggested to Fanenbruck et al. that Remipedia might be the sister taxon to Malacostraca, regarded as the most advanced of the crustaceans. This is also on of the reasons why it is included in the Pancrustacea hypothesis, a hypothethic clade of probably the most advanced Mandibulata. An appendage is, in general, an external body part that projects from the body, or a natural prolongation or projection from a part of any organism. ... Orders Subclass Eumalacostraca  Superorder Eucarida   Order Amphionidacea   Order Decapoda - crabs, shrimp   Order Euphausiacea - krill  â€ Superorder Pancarida   â€ Order Thermosbaenacea  Superorder Peracarida   Order Amphipoda - amphipods   Order Cumacea - cumaceans   Order Isopoda - pillbugs, sowbugs   Order Lophogastrida   Order Mictacea   Order Mysida   â€ Order Spelaeogriphacea   Order Tanaidacea  Superorder Syncarida   Order Anaspidacea   Order Bathynellacea   â€ Order Palaeocaridacea   Order Stygocaridacea... A clade is group of organisms which share a common ancestor and which includes all decendents of that ancestor. ...

References

• Fanenbruck, M., Harzsch, S., & Wägele, J. W. (2004). The brain of the Remipedia (Crustacea) and an alternative hypothesis on their phylogenetic relationships. Proceedings of the National Academy of Sciences. Published online 5th March 2004.