Upper Permian and Lower Triassic conodonts, high-precision U-Pb zircon ages and the Permian-Triassic boundary in the Malay Peninsula

•Wuchiapingian-Changhsingian and Permian-Triassic boundaries established in Malaysia.•New high-precision U-Pb zircon ages: 253.70Ma, 252.23Ma, 252.47Ma and 252.16Ma for Malaysia P-T.•New criteria for distinguishing conodont genera Hindeodus and Isarcicella.•New model for evolution of the conodont genera Hindeodus and Isarcicella.•New correlation chart for Upper Permian and Lower Triassic of Malaysia.