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Abstract <p>Two new species of ostracods of the genus <i>Aparchitellina</i>—<i>A. lenis</i> sp. nov. and <i>A. reticulata</i> sp. nov. from the carbonate shallow-shelf deposits of the Yba Formation (Givetian?–Frasnian) of the Southern Timan are described. The species <i>A. lenis</i> sp. nov. is restricted to the lower part of the section, while <i>A. reticulata</i> sp. nov. enters stratigraphically higher and is distributed almost throughout the section. The described species add to the biostratigraphic characterization of the Givetian–Frasnian boundary interval in carbonate facies.</p>

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New Species of the Ostracod Genus Aparchitellina from the Yba Formation (Givetian?–Frasnian) of Southern Timan (Djejimparma Uplift)

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • D. B. Sobolev

摘要

Abstract

Two new species of ostracods of the genus Aparchitellina—A. lenis sp. nov. and A. reticulata sp. nov. from the carbonate shallow-shelf deposits of the Yba Formation (Givetian?–Frasnian) of the Southern Timan are described. The species A. lenis sp. nov. is restricted to the lower part of the section, while A. reticulata sp. nov. enters stratigraphically higher and is distributed almost throughout the section. The described species add to the biostratigraphic characterization of the Givetian–Frasnian boundary interval in carbonate facies.