[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superclass Tunicata Cuvier
     Class Appendicularia Lahille, 1890 - appendicularians
       Family Oikopleuridae Lahille, 1887
         Genus Megalocercus Chun, 1888[1887]
           Megalocercus abyssorum Chun, 1887