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Cloudinid

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Cloudinids (Cloudinia) are an extinct animal phylum that formed small Late Proterozoic[?] tubelike or conical fossils consisting of "cup-in cup" segments of calceraecous material.

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Sanskrit language

... extremely common is vowel gradation; every root has (not necessarily all distinct) zero, guna[?], and vrdhii[?] grades. If V is the vowel of the zero grade, the gun ...