European Palaeobotany and Palynology Conference 2026

We report the first systematic description of Permian plant macrofossils from the Lower Permian Gipshuken Formation on Spitsbergen, Svalbard, Arctic Norway. Several conifer shoots from a fossil plant horizon in the lower Vengeberget member are assigned to the genus Quadrocladus. The plant-bearing interval occurs within stacked anhydrite–dolomite–marl successions of the Vengeberget member that record a shallow marine to supratidal sabkha system on an extensive carbonate platform in a semi arid climate, characterized by hypersalinity, low taxonomic diversity, and evidence for palaeosol formation and vegetation growth on exposed shoals and platform interiors. The Quadrocladus shoots display pronounced xeromorphic traits, notably very short and narrow leaves, consistent with adaptation to water stress in semi arid, periodically desiccated playa–sabkha settings. Comparison with younger occurrences from the Kungurian Tregiovo flora and Late Permian Angaran and Zechstein successions shows that the Spitsbergen record is so far, both the oldest and the northernmost known occurrence of Quadrocladus. These findings imply a boreal, semi arid origin for this xeromorphic, stress tolerant conifer and provide a key high latitude data point for reconstructing Early Permian vegetation dynamics and the subsequent palaeobiogeographic expansion of Quadrocladus across Pangaea.