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Palaeocaridacea
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Palaeocaridacea

crustacean

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taxonomy

  • American lobster
    In crustacean: Annotated classification

    †Order PalaeocaridaceaCarboniferous to Permian; first thoracic segment not fused to head; abdominal pleopods 2-branched, flaplike; 4 families.Order AnaspidaceaPermian to present; with or without eyes; antennules biramous; abdominal appendages well-developed; telson without a furca; South Australia and Tasmania; freshwater; about 8 species.

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  • hermit crab
    In malacostracan: Annotated classification

    †Order Palaeocaridacea Carboniferous to Permian; first thoracic segment not fused to head; abdominal pleopods 2-branched, flaplike; 4 families. Order Anaspidacea (torrent shrimps) Triassic to Holocene; first thoracic segment fused to head; pleopods 1-branched, slender, multisegmented; fresh waters of Australia, New Zealand, and

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