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Abstract <p>A new genus of the family Annuliconchidae, <i>Mazaevella</i> gen. nov, is described from the Gzhelian-Sakmarian of Cisuralia, the Western Urals and Pechora Basin. The new genus differs from other genera of the family in the dominance of radial ornamentation in the spaces between comarginal ridges. The type species <i>M. placunensis</i> (Koschman in Nelzina, 1958), comb. nov. is redescribed, and a lectotype is designated. The stratigraphic references of the occurrences are detailed. Representatives of <i>Mazaevella</i> gen. nov. are known only from reef facies and are endemic to the Paleo-Ural Strait.</p>

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Mazaevella gen. nov.—A New Genus of Pectinida (Annuliconchidae, Bivalvia) from the Gzhelian–Sakmarian of European Russia

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • L. E. Shilekhin,
  • A. S. Biakov,
  • S. E. Vdovichenko

摘要

Abstract

A new genus of the family Annuliconchidae, Mazaevella gen. nov, is described from the Gzhelian-Sakmarian of Cisuralia, the Western Urals and Pechora Basin. The new genus differs from other genera of the family in the dominance of radial ornamentation in the spaces between comarginal ridges. The type species M. placunensis (Koschman in Nelzina, 1958), comb. nov. is redescribed, and a lectotype is designated. The stratigraphic references of the occurrences are detailed. Representatives of Mazaevella gen. nov. are known only from reef facies and are endemic to the Paleo-Ural Strait.