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''Geinitzina'' is a genus of Foraminifera (Protista〔(Sen Gupta, 1999. Modern Foraminifera )〕 or Protozoa〔Foraminiferida: Kingdom Protozoa. GBIF data portal () as of 9Mar2013.〕) from the early Carboniferous (late Mississippian to the late Permian that may have extended into the Triassic. Chambers are uniserial, arranged in a single row, or line. Test wall is double layered. The outer layer is of hyaline radial calcite, and is light in color. The inner layer is of microgranular calcite, and is dark is color. Both layers are secreted by the protoplasm. ''Geinitzina'' is included in the Fusulinida (Loeblich & Tappan, 1984, 1988) on the basis of test wall composition, in having a secreted microgranular layer. ==References== *A. R. Loeblich and H. Tappan. 1984. Suprageneric classification of the Foraminiferida (Protozoa). ''Micropaleontology'' 30(1):1-70 *__ __ 1988. * (Forminiferal Genera and their Classification. ) E-book *(''Geinitzina'' ) ''in'' The Paleobiology Database. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Geinitzina」の詳細全文を読む スポンサード リンク
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