Kahlerininae Leven 1963

Subfamily KAHLERININAE Leven, 1963 Test nautiloid, highly compressed along the axis, to subspherical, in the inner whorls sometimes with a weak sharpening of the periphery and with an unstable position of the coiling axis; septal sutures poorly marked; number of whorls up to 5-7; septa thick, flat or slightly convex, thickened at ends; number of septa up to 8-11 in the last whorls; wall thick, two-layered, with simple fine porosity, inconsistently expressed; the aperture is single, sometimes foramina are present at the base of the septa in the outer whorls; chomata are weakly expressed; parachomata in external whorls small and inconstant. Remark: Recently published Kahlerinella Okuyucu, 2022 is considered herein as a subjective junior synonym of Kahlerina Kochansky-Devidé & Ramovš, 1955. We cannot see neither morphological nor microstructural differences with Kahlerina. Composition: Kahlerina Kochansky-Devidé & Ramovš, 1955.