Figure 29: Carina (keel).
A-B: Spiroplectammina cf. taiwanica (Chang), apertural view and side view. C-E: Paracibicides edomica Perelis et Reiss, dorsal (spiral) view, peripheral view and detail of perforation pattern along the peripheral carina on the dorsal surface. Note the interiomarginal, extraumbilical - equatorial position of aperture. All specimens from the Gulf of Aqaba. Recent. SEM graphs.
a: aperture; k: carina (keel); p: pore.