Syzraniidae Vachard, in Vachard and Montenat, 1981 (*3250), p. 73.

Test elongate, globular proloculus and tubular later chamber that is undivided or may have pseudosepta; wall calcareous, hya­line, fibrous, may have two layers, finely per­forate. U. Silurian (Pridolian) to L. Devonian; L. Carboniferous (Tournaisian) to U. Permian (Djulfian).