Crustacea Brünnich, 1772 see [unranked] Crustaceomorpha Chernyshev, 1960
Count: -
   [unranked] †Oelandocarididae Haug, Maas & Waloszek, 2009
  Count: [†*] †3g;3s
     Genus †Oelandocaris Müller, 1983
    Count: [†*] †1s
       †Oelandocaris oelandica Müller, 1983
      Count: -