Genus Axoniderma Ridley & Dendy, 1886 Type species: Axoniderma mirabilis (Ridley & Dendy, 1886) (type by monotypy) Definition: Cladorhizidae with anchorate anisochelae and a ‘crinorhizoid’ parasol morphology. Species also included: Axoniderma mirabilis (Ridley & Dendy, 1886), A. australis (Ekins, Erpenbeck & Hooper, 2020), A. corona (Lehnert, Watling & Stone, 2005), A. hubbsi (Lundsten, Reiswig & Austin, 2017), A. kensmithi (Lundsten, Reiswig & Austin, 2017), A. longipinna (Ridley & Dendy, 1886), A. mexicana (Lundsten, Reiswig & Austin, 2017), A. poritea (Ekins, Erpenbeck & Hooper, 2020) and A. similis (Ridley & Dendy, 1886). Remarks. The type species Axoniderma mirabilis was originally described as Trochoderma mirabile Ridley & Dendy, 1886, type species by monotypy of Trochoderma Ridley & Dendy, 1886 (Ridley & Dendy, 1886: 344). However, the genus was already occupied and another genus Axoniderma Ridley & Dendy, 1886 was created later, in the same publication (Ridley & Dendy, 1886: 493) to accommodate the one species. The full description of Axoniderma mirabile was completed later (Ridley & Dendy 1887: 96–98). The genus was later synonymized with Cladorhiza (Hajdu & Vacelet, 2002). All of the species previously encompassed within the genus Cladorhiza were compared (Ekins et al. 2020a), and then subsequently split (Ekins et al. 2020b) into five genera: Cladorhiza Sars, 1872 (with arbuscular morphology), Axoniderma Ridley & Dendy, 1886 (with classic parasol/umbrella morphology), Abyssosdiskos Ekins, Erpenbeck, Goudie & Hooper, 2020 (with an upwards facing disc), Bathytentacular Ekins, Erpenbeck, Goudie & Hooper, 2020 (with teardrop with tentacular processes) and Nullarbora Ekins, Erpenbeck, Goudie & Hooper, 2020 (with pinnate morphology).

Published as part of Ekins, Merrick & Hooper, John N. A., 2023, New carnivorous sponges from the Great Barrier Reef, Queensland, Australia collected by ROV from the RV FALKOR, pp. 435-471 in Zootaxa 5293 (3) on page 459, DOI: 10.11646/zootaxa.5293.3.2, http://zenodo.org/record/7961272