Silurian spiriferide brachiopods from Yass and Molong, New South Wales, and Canberra, Australian Capital Territory

Abstract

Six spiriferide species are now known from the Yass Silurian, of which only two had been previously described from there and are here revised: Janius bowningensis and Spirinella caecistriata. Placed in synonymy with the latter is the Canberra Wenlock species Reticulariopsis silurica. Also occurring in the Canberra Wenlock and now known from Yass is Endospirifer anxius. New are the eospiriferines Nanattegia yassensis gen. et sp. nov. and Hedeina bruntoni sp. nov., as well as an unnamed probable ambocoeliine. From Canberra is described Hedeina oepiki sp. nov., and from Molong (where it occurs with Spirinella caecistriata) the howellelline Rufispirifer nucula, a much-reported form known with confidence from the late Wenlock of Bohemia and Canberra, and the Ludlow of the sub-polar Urals.