Three Lower Carboniferous marine faunal zones and one faunal assemblage are recognized in the Gresford‐Dungog district, New South Wales following a faunal and stratigraphical study of the region. In ascending order they are the?Thomasaria voiseyiAssemblage Zone, theSchellwienellacf.burlingtonensisFauna, theWerriea australisAssemblage Zone and theDelepinea aspinosaAssemblage Zone. They are correlated with the Lower Carboniferous zones of Germany as follows:?Thomasaria voiseyiAssemblage Zone—Cu IIα,Schellwienellacf.burlingtonensisFauna—Cu IIα to Cu IIβ;Werriea australisAssemblage Zone—Cu IIδto Cu IIIα; andDelepinea aspinosaAssemblage Zone— Cu IIIαto Cu IIIβ.