Invertebrates-The Crayfish

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The appendages are biramous, meaning primitively branched, and although this condition is modified in many species, adults always have at least some biramous appendages. Crustaceans respire with gills. Animals in the Malacostraca class have the hard, calcified exoskeleton typical of crustaceans...
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The appendages are biramous, meaning primitively branched, and although this condition is modified in many species, adults always have at least some biramous appendages. Crustaceans respire with gills. Animals in the Malacostraca class have the hard, calcified exoskeleton typical of crustaceans...
Showed next 250 characters

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