Semicircular with radial areolation, partly in bundles/groups, and with a central annulus.Marginal ring of labiate processes and a pseudonodulus, midway along the straight side(Throndsen et al., 2007).
Euodia cuneiformis (Wallich) Schütt;Euodia radiata Castracane; Euodia inornata Castracane; Euodia gibba (Bailey) Ralfs in Pritchard
Pavillard, 1925: p. 9, Fig. 10 (as Euodia cuneiformis); Hustedt, 1930: p. 903, Fig. 542; Cupp, 1943: p. 170, Fig. 121; Crosby and Wood, 1958: p. 525, Pl. 34: 53; Hendey, 1964: p. 94, Pl. XXII: 9; Simonsen, 1974: p. 21; Ricard, 1987: p. 149, Figs. 30-34; Throndsen et al., 2007:p. 148.
Trapesoid in girdle view, with curved valve with a central depression. Valve distinctly fasciculated; annulus less distinct. Length (apical axis) 58-288 µm; width (transapical axis) 32.5-158 µm; areolae in 10 µm in the center 6-9; at valve margin 10-13 Throndsen et al.,2007).
Cells length 110 µm; width 65 µm.
Warm water species. It has been previously reported from Indian Ocean (Simonsen, 1974).
Sites of occurrence in RSA:
In Winter 2006 Cruise, a single specimen was observed at one locality (St. 90) in the Sea of Oman (refer site map). It has been previously reported from Kuwaiti waters of the inner RSA (Al-Yamani et al., 2004; Al-Kandari et al., 2009).