Abstract

The holotypes of Late Cretaceous species of the genera Dictyomitra Zittel, 1876 and Lithostrobus Bütschli, 1882 (Radiolaria) from the collection of R.Kh. Lipman were re-examined. It is shown that not all of them agree with generic diagnoses. It is established that Dictyomitra gigantea Lipman, D. scalaris Lipman, and Lithostrobus turritella Lipman in fact belong to the genus Xitus Pessagno, 1977. The diagnoses of three species, X. giganteus (Lipman, 1952), emend. nov., X. scalaris (Lipman, 1952), emend. nov., and X. turritellus (Lipman, 1952), emend. nov., are emended. Species published without appropriate descriptive material are considered to be nomina nuda: Lithocampe tetracamerata Lipman nom. nud. and Theocampe sibirica Lipman nom. nud.

中文翻译：

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修订从 R.Kh. 利普曼的收藏

摘要

来自R.Kh. _ _ _ 利普曼被重新检查。结果表明，并非所有人都同意通用诊断。已确定Dictyomitra gigantea Lipman、D. scalaris Lipman 和Lithostrobus turritella Lipman 实际上属于Xitus Pessagno 属，1977 年。对三个物种X. giganteus (Lipman, 1952) 的诊断进行了修正。nov., X. scalaris (Lipman, 1952), 修正。nov. 和X. turritellus（李普曼，1952 年），修正。十一月，被修改。没有适当描述材料的物种被认为是 nomina nuda：Lithocampe tetracamerata Lipman nom。裸体。和Theocampe sibirica Lipman nom。裸体。