urn:lsid:zoobank.org:act: 313FA390-1049-41D6-9CEA-EBFD7B811BCE
Type species: Nullarbora heptaxiagen nov. sp. nov.
Definition: Cladorhizidae with anchorate anisochelae and a pinnate body shape, i.e. filaments at right angle to a straight stem.
Etymology: Nullus L. null, Arbor L. trees. The Nullarbor Plain is also the name of the land surrounding the Great Australian Bight from where the newly discovered species in this manuscript were collected.
Species also included:N. acanthoxea (Hestetun, Fourt, Vacelet, Boury-Esnault & Rapp, 2015), N. caillieti (Lundsten, Reiswig & Austin, 2014), N. evae (Lundsten, Reiswig & Austin, 2014), N. fristedtii (Lambe, 1900), N. grimaldii (Topsent, 1909), N. investigator (Ekins, Erpenbeck & Hooper, 2020), N. linearis (Ridley & Dendy, 1887), N. microchela (Lévi, 1964), N. penniformis (Göcke & Janussen, 2013), N. pteron (Reiswig & Lee, 2007), N. rectangularis (Ridley & Dendy, 1886), N. segonzaci (Vacelet, 2006) and N. septemdentalis (Koltun, 1970).