Eodinobolus and related trimerellid brachiopods from the late Ordovician of New South Wales

Eodinobolus stevensi sp. nov. occurs in the basal Cliefden Caves Lst. and Bowan Park Groups in central NSW. These trimerellids form a minor component of a diverse offshore level-bottom community, Belubula spectacula gen et sp. nov., more closely resembles Silurian genera than contemporaneous late Caradoc forms in displaying prominent umbonal cavities and rudimentary platform vaults; it lies off the Eodinobolus-Monomerella lineage. The early evolutionary history of the trimerellids is reviewed. -from Author