Work

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

Year: 2026

Type: article

Abstract: 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.

Source: Paläontologische Zeitschrift

DOI: 10.1007/s12542-026-00778-9

Authors: Anna Pint, Frank Scholze, Peter Frenzel

Institutions: Friedrich Schiller University Jena, NaturHistorisches Museum Schleusingen

Language: English

Topic: Paleontology and Stratigraphy of Fossils

Subfield: Paleontology

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,190

Funder: Friedrich-Schiller-Universität Jena