Cladaster Verrill 1899

Verrill 1899: 175; Fisher 1911: 221; Bernasconi 1963: 13; 1964: 255; Halpern 1970: 179; Clark & Downey 1992: 238; A.M. Clark 1993: 251; Mah 2011: 19; 2018: 29.

Diagnosis. Body weakly stellate to stellate. Abactinal plates low tabulate with weakly to strongly expressed fasciolar channels. Hemispherical, coarse grained granules present on abactinal, marginal, and actinal plate surface which are deciduous on preserved specimens. Large, spatulate type pedicellariae. Furrow spines, blunt to spatulate, oval in cross-section. Large, thick subambulacral spine present in addition to furrow spine. Modified from Mah (2018).