Major Groups | Crustacea (crustaceans) | Malacostraca (malacostracans) | Decapoda (yabbies plus) | Parastacidae |
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6(4). Chelae isomorphic; inner ramus of uropod with either or both lobes of protopodite produced to acute point; ischium on antennal peduncle with centrolateral spine
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-Chelae either isomorphic OR dimorphic; inner ramus of uropod almost always with neither lobes of protopodite (P) produced to acute point; ischium of antennal peduncle without centrolateral spine
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