| Summary: | The revised genus Paranarthrurella Lang, 1971a includes three species: P. caudata (Kudinova-Pasternak, 1965), the type species of the genus, P. dissimilis (Lang, 1972), and P. voeringi (G.O. Sars, 1877), which were all originally and subsequently classified in other genera (Leptognathia, Cryptocope, Robustognathia and Biarticulata). The genus is defined by a set of specific characters: a long and narrow labrum, a rounded molar, large lacinia mobilis widely separated from incisor; maxillule with eleven spiniform setae distally and numerous simple setae on outer margin; maxilliped with narrow endites and two flat setae on the distal margin; and a chela with well calcified ‘crushing margins’. The genus is most close related to Armatognathia Kudinova-Pasternak, 1987 and it is suggested that both genera may constitute a new family.
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