Early Carboniferous (mid-Tournaisian) conodonts from north-eastern Queensland (Ruxton and Teddy Mountain Formations): age-implications and stratigraphic alignments

Conodonts from an interval with shales and minor carbonates low in the Ruxton Formation of the eastern Clarke River Basin, northeastern Queensland, indicate an age in the Early crenulata Zone. It thus aligns chronologically with the marine transgression into the Burdekin Basin (in the upper Hardwick Formation), with the lower unit of the Teddy Mountain Formation of the Broken River Province and Gray Creek-Stockyard Creek area and, presumably, with the indubitably marine interval within the Venetia Formation in the western Clarke River Basin.