Aljutovellidae Solovieva

Family ALJUTOVELLIDAE Solovieva in Rauzer-Chernousova et al., 1996 Test subrhomboidal with pointed axial ends, or fusiform, or less often ovoid; initial part usually nautiloid; rarely the first whorls endothyroid; wall trilayered, less often bilayered, the outer tectorium is absent, sometimes a rudimentary diaphanotheca (from gray to light) is developed under the tectum; septa are flat in the median part of external whorls and wavy on the sides of the test near the axial ends or folded with the formation of arches near the axial ends; the number of septa is small; chomata are usually quite strongly developed, often subquadratic, rounded, rarely ribbon-shaped in internal whorls; additional deposits usually absent, the aperture is narrow to moderate. Upper Bashkirian-lower Moscovian. Composition: Aljutovella Rauzer-Chernousova in Rauzer-Chernousova et al., 1951; Priscoidella Solovieva in Rauzer-Chernousova et al., 1996; Skelnevatella Solovieva in Rauzer-Chernousova et al., 1996; Tikhonovichiella Solovieva in Rauzer-Chernousova et al., 1996.