FIGURE 10 in SEM study of species of Oswaldella Stechow, 1919 (Cnidaria, Hydrozoa, Kirchenpaueriidae), with an annotated checklist of the species of the genus

FIGURE 10. Oswaldella niobae Peña Cantero & Ramil, 2006. A, stem fragment with hydrocladium showing hydrothecal arrangement; B, cauline apophyses showing two axillary nematophores and one 'mamelon'; C, cauline apophysis with a single axillary nematophore; D–E, unforked hydrocladial internodes (D frontal view, E lateral view). Scale bar: 400 µm (A), 100 µm (D–E) and 20 µm (B–C).