The test is broad and robust in appearance, with a rounded anterior margin, which is truncated posteriorly. The greatest test height occurs anterior of the apical disc while the anal lunule is situated behind the posterior petals. The posterior paired ambulacral lunules are longer than the anterior pair, while lunule spines are narrow and not greatly flattened. The aboral primary spines are narrow and club-shaped, the tip not being either particularly bulbous or flattened distally. The biphyllous pedicellariae are typical of the genus, while the bidentate pedicellariae occur in two forms (large scissor-like form and smaller beaked form with distal teeth) typical of the micropora-species complex.
H. L. Clark (1948) differentiated this species on the basis of its solid test, being broadly oval in outline and distinctly curved when viewed laterally, in having narrow poriferous zones and long narrow ambulacral lunules, the anterior trio being slightly smaller than the posterior pair.