Early Triassic (Induan-Olenekian) conodont biostratigraphy, global anoxia, carbon isotope excursions and environmental perturbations: New data from Western Australian Gondwana

► Induan-Olenkian boundary identified using conodonts in the Perth Basin, Australia ► δ13Corg positive excursion peak correlates with Induan-Olenekian boundary globally ► Early Triassic dysoxia/anoxia linked to environmental perturbations and upwelling