Communication Dans Un Congrès Année : 2024

A hidden benthic ecosystem in the Late Ordovician Soom Shale Lagerstätte (Cedarberg Formation, Cape Supergroup)

Résumé

Exceptionally well-preserved fossils in the Soom Shale Lagerstätte offer extraordinary insights into marine organisms that lived in southern Gondwana following Earth's second-largest mass extinction. This Late Ordovician assemblage is predominantly comprised of pelagic taxa, with an almost complete absence of benthic fauna, previously attributed to periodically anoxic-euxinic conditions that precluded seafloor occupation. We present the discovery of a meiofaunal benthic trace fossil assemblage which demonstrates a thriving and persistent small food web that lay hidden in the mudstones of the Cedarberg Formation. The sedimentology of these deposits suggests that the trace makers tolerated fluctuating

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Dates et versions

hal-05570277 , version 1 (27-03-2026)

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  • HAL Id : hal-05570277 , version 1

Citer

Browning Claire, Gabbott Sarah E., Mángano Gabriela M., Buatois Luis A., Albani Abderrazak El, et al.. A hidden benthic ecosystem in the Late Ordovician Soom Shale Lagerstätte (Cedarberg Formation, Cape Supergroup). 22nd Conference of the Paleontological Society of southern Africa, Sep 2024, Graaff-Reinet, France. ⟨hal-05570277⟩
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