A Permian ammonoid from New South Wales and the correlation of the Upper Marine Series
References to alleged occurrences of ammonoids in the Permian of New South Wales are numerous. With the exception of the one specimen described in this paper they all seem to refer to bellerophontids identical with or related to Warthia micromphala (Morris). An abbreviated historical review of that species is, therefore, included. The only indubitable ammonoid from the Permian of New South Wales was found in the Branxton stage of the Upper Marine series of the Hunter River Valley. The specimen represents a new species which is described as Adrianites (Neocrimites) meridionalis. The evolutionary stage reached by that species indicates an Artinskian age for the Branxton beds.