Scholarlink

<p>The present study describes carapace valve morphologies of conchostracans (Crustacea) from the Bromacker Horizon (Tambach Sandstone Member, Tambach Formation, Rotliegend Group; Early Permian) of the Bromacker Lagerstätte in the Thuringian Forest Basin (Thuringia, Central Germany). Variations in valve morphology separate two morphotypes. The dominating morphotype 1 is <i>Lioestheria andreevi</i> (Zaspelova, 1968), regarded here as synonymous with <i>Lioestheria monticula</i> Martens, 1983. Much rarer is morphotype 2 with some individuals showing transitions to morphotype 1. Mass occurrence of conchostracans underlines the wet-dry seasonality of the past climate at Bromacker. Preservation of “soft” parts in the postero-dorsal parts of the body occurs in some specimens highlighting the Fossil-Lagerstätte quality of the Bromacker site. The recent radiometric dating of the Bromacker site shifts the lower limit of the “<i>Lioestheria andreevi</i>–<i>Pseudestheria</i> form Wilhelmsthal assemblage zone” sensu Schneider &amp; Scholze (2018) to the Asselian.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Early Permian conchostracans from the Fossil-Lagerstätte Bromacker, Thuringian Forest Basin, Germany

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月29日

查看全文
  • Anna Pint,
  • Frank Scholze,
  • Peter Frenzel

摘要

The present study describes carapace valve morphologies of conchostracans (Crustacea) from the Bromacker Horizon (Tambach Sandstone Member, Tambach Formation, Rotliegend Group; Early Permian) of the Bromacker Lagerstätte in the Thuringian Forest Basin (Thuringia, Central Germany). Variations in valve morphology separate two morphotypes. The dominating morphotype 1 is Lioestheria andreevi (Zaspelova, 1968), regarded here as synonymous with Lioestheria monticula Martens, 1983. Much rarer is morphotype 2 with some individuals showing transitions to morphotype 1. Mass occurrence of conchostracans underlines the wet-dry seasonality of the past climate at Bromacker. Preservation of “soft” parts in the postero-dorsal parts of the body occurs in some specimens highlighting the Fossil-Lagerstätte quality of the Bromacker site. The recent radiometric dating of the Bromacker site shifts the lower limit of the “Lioestheria andreevi–Pseudestheria form Wilhelmsthal assemblage zone” sensu Schneider & Scholze (2018) to the Asselian.