Foraminifera taxon details
From editor or global species database
Diagnosis Test small, subcylindrical, tiny proloculus, early whorls tightly coiled, with short coiling axis that lengthens abruptly after the third volution, later whorls with moderately looser coiling, septa few, thin, strongly but irregularly fluted, appearing as high arches and loops in axial section and more intensely fluted toward the poles; wall in inner whorls undifferentiated or with tectum and primatheca, outer whorls with tectum and keriotheca and of increased thickness, minute chomata present in outer whorls. U. Carboniferous (Gzhel'ian) to L. Permian (Asselian); USSR: central Asia; Yugoslavia. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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