Fig. 7

Living korethrasterids. a, b, i Korethraster hispidus Thomsen 1873. a Abactinal view. b Actinal. i Denuded abactinal surface. c, d Peribolaster biserialis Fisher, 1911. c Abactinal. d Actinal views. e–h Remaster gourdoni, Koehler, 1912, abactinal e and actinal c views. g Denuded abactinal surface. h Actinal interradial view to show chevron plates, adambulacrals and actinolateral spines. a, b, i Faroe Islands, Natural History Museum, Torshavn, 739. c, d Bering Sea, USNM 31,732. e–g Falklands Islands, NHM Zoology 1948.3.16.546. Scale bars equal 5 mm