FIGURE 2. A, B, NHM 1948.12.9.122 in The test architecture of Clypeaster (Echinoidea, Clypeasteroida) and its phylogenetic significance

FIGURE 2. A, B, NHM 1948.12.9.122, Clypeaster annandalei Koehler, 1922, Station 194, John Murray Expedition; A, apical, B, oral. C, D, NHM 1948.12.9.17, Clypeaster fervens Koehler, 1922, station 53, John Murray Expedition; C, oral, D, apical. E, F, NHM EE14009 Clypeaster humilis Leske, 1778, from Western Australia; E, apical, F, oral. G, H, NHM 1937.5.9.18, Clypeaster ravenelii (Agassiz, 1869), off Tortingas, Gulf of Mexico; G, apical, H, oral. Scale bar = 10 mm.