ArticleNature communications2020
The base of the Lystrosaurus Assemblage Zone, Karoo Basin, predates the end-Permian marine extinction.
Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Evolutionary stasis in synapsid encephalization during the end-permian mass extinction.Scientific reports · 2026Article
- Article
- Geochronology of the Early Triassic based on coupled Bayesian zircon eruption age and Bayesian age-depth models.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Repeated pulses of volcanism drove the end-Permian terrestrial crisis in northwest China.Nature communications · 2024Article
- The terrestrial end-Permian mass extinction in the paleotropics postdates the marine extinction.Science advances · 2024Article
- A new archosauriform species from the Panchet Formation of India and the diversification of Proterosuchidae after the end-Permian mass extinction.Royal Society open science · 2023Article
- Volcanic COScience advances · 2023Article
- Felsic volcanism as a factor driving the end-Permian mass extinction.Science advances · 2021Article
- Evidence from South Africa for a protracted end-Permian extinction on land.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Living fast in the Triassic: New data on life history in Lystrosaurus (Therapsida: Dicynodontia) from northeastern Pangea.PloS one · 2021Article
- Article
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6 authors.
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Abstract
The current model for the end-Permian terrestrial ecosystem crisis holds that systematic loss exhibited by an abrupt turnover from the Daptocephalus to the Lystrosaurus Assemblage Zone (AZ; Karoo Basin, South Africa) is time equivalent with the marine Permian-Triassic boundary (PTB). The marine event began at 251.941 ± 0.037 Ma, with the PTB placed at 251.902 ± 0.024 Ma (2σ). Radio-isotopic dates over this interval in the Karoo Basin were limited to one high resolution ash-fall deposit in the upper Daptocephalus AZ (253.48 ± 0.15 (2σ) Ma) with no similar age constraints for the overlying biozone. Here, we present the first U-Pb CA-ID-TIMS zircon age (252.24 ± 0.11 (2σ) Ma) from a pristine ash-fall deposit in the Karoo Lystrosaurus AZ. This date confirms that the lower exposures of the Lystrosaurus AZ are of latest Permian age and that the purported turnover in the basin preceded the end-Permian marine event by over 300 ka, thus refuting the previously used stratigraphic marker for terrestrial end-Permian extinction.
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