The significance of a new locality for Monograptus thomasi (Early Devonian) southwest of Beaconsfield, Tasmania, and of the Corn Hill Formation

Monograptus thomasi, Early Devonian, occurs west of Cabbage Tree Hill, Beaconsfield, Tasmania, in rocks previously mapped as Cambrian. The occurrence constrains the location of a basal thrust considered to be a conduit for Late Devonian gold mineralisation. The Corn Hill Formation, which contains the graptolite, is significant in regional stratigraphic, palaeogeographic, structural and tectonic models.