Laetmaster Fisher 1908 Fisher 1908: 88 Diagnosis Body stellate, Rr=2.7. Arms six, slender, disc large, flat, interbrachial arcs rounded. Abactinal surface covered by small subpaxillate plates, each with spinelets, 2 to 4. Distinct bare interradial space present with a prominent madreporite present in one bare interradius. Marginal plates composed of a large, single paxillae, widely spaced, each with pointed spines, 5 to 6, directed outward, spines perpendicular to the plane of the disc. Adambulacral furrow spines 4 to 5, parallel to furrow, subambulacral spines small. Modified from Clark & Downey (1992).

Published as part of Mah, Christopher L., 2024, Two New Taxa of Goniasteridae (Asteroidea, Echinodermata) and Noteworthy Observations of Deep-Sea Asteroidea by the NOAA Ship Okeanos Explorer in the North and Tropical Atlantic, pp. 461-508 in Zootaxa 5432 (4) on page 497, DOI: 10.11646/zootaxa.5432.4.2, http://zenodo.org/record/10910698