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Crustacea: Tree of Life Web Project; The Crustacean Society Archived 2011-11-10 at the Wayback Machine; Natural History Collections: Crustacea: University of Edinburgh; Crustaceans (Crustacea) on the shore of Singapore; Crustacea(crabs, lobsters, shrimps, prawns, barnacles) Archived 2012-01-11 at the Wayback Machine: Biodiversity Explorer
Crustaceans are members of the sub-phylum Crustacea, a large group of arthropods (55,000 species). They include various familiar animals, such as lobsters , crabs , shrimp and barnacles . They are variously found in marine and freshwater, with a few terrestrial members (such as woodlice ).
Abludomelita obtusata, an amphipod. Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are a part of the subphylum Crustacea (/ k r ə ˈ s t eɪ ʃ ə /), a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish), seed shrimp, branchiopods ...
Abludomelita obtusata, an amphipod. Crustaceans are a group of arthropods that are a part of the subphylum Crustacea (/ k r ə ˈ s t eɪ ʃ ə /), a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish), seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, opossum shrimps, amphipods and mantis shrimp.
The earliest records of other modern families date to the Early Cretaceous, including the parastacid Palaeoechinastacus from Australia which is 115 million years old, [37] the cambaroidid Palaeocambarus from the Yixian Formation of China which is likely around 120 million years old (Barremian-Aptian), [38] and the astacid "Austropotamobius ...
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However, the more specific timeline is uncertain. Some Cambrian fossils of uncertain taxonomic placement, such as those of Priscansermarinus, are nonetheless likely to be members of Multicrustacea. [citation needed]
He believed limbs and lungs may have evolved from the necessity of having to find new bodies of water as old waterholes dried up. [ 63 ] The second hypothesis is the "inter-tidal hypothesis" put forward in 2010 by a team of Polish paleontologists led by Grzegorz Niedźwiedzki.