A revision of the extinct Mesozoic family Prochydoridae Smirnov, 1992 (Crustacea: Cladocera) with a discussion of its phylogenetic position Author Kotov, Alexey A. text Zoological Journal of the Linnean Society 2009 2009-02-28 155 2 253 265 https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2008.00412.x journal article 3182 10.1111/j.1096-3642.2008.00412.x e78a1472-d6c2-41b4-84d9-cbacfa420a67 0024-4082 4687730 2. GENUS ARCHEOXUS SMIRNOV, 1992 (SMIRNOV, 1992A: 112). Type species: Archeoxus mirabilis Smirnov, 1992 . Diagnosis: Body moderately high with postero-dorsal angle ill defined or completely absent, head capsule of ‘chydorid-type’ (strongly compressed dorso-ventrally), head shield with acute rostrum, valves without marginal setae, antenna II relatively long, mandible attached to point of joint of head shield and valve.