GRAPTOLITES OF THE BARNBY HILLS SHALE (SILURIAN, LUDLOW), NEW-SOUTH-WALES, AUSTRALIA

An upper Ludlow graptoloid fauna of seven taxa from the Barnby Hills S hale, New South Wales, is associated with a diverse dendroid fauna of 20 taxa, in assemblages dominated by graptolites with rare scolecodont s. An association of late forms of Bohemograptus bohemicus renuis (Bou cek) with Egregiograptus egregius byrnesianum gen. et subsp. nov. sugg ests a level of approximately the inexpectatus/kozlowskii biozones. Th e following additional new forms are described: Dictyonema sherrardae mumbilensis subsp. nov., D. goepperti krafti subsp. nov., D. delicatul um barnbyensis subsp. nov., Stelechocladia talenti sp. nov., S. strusz i sp. nov., Acanthograptus aculeatus neureaensis subsp. nov., Thallogr aptus acanthicus vandenbergi subsp. nov., T. cooperi sp. nov., Coremag raptus kalfusi praekalfusi subsp. nov., Ptilograptus discurrens sherra rdae subsp. nov., Linograptus posthumus introvertus subsp. nov., and P rolinograptus packhami gen. et sp. nov. The following are recorded fro m Australia for the first time: D. goepperti Kraft; Callograptus?pulch ellus Shrock (subspp. 1 and 2) Desmograptus quebecensis Ruedemann, Ste lechocladia Boucek, Coremagraptus plexus (Pocta), Coremagraptus kalfus i Boucek and E. egregius Urbanek. In addition are several forms attrib utable to Dictyonema, Dendrograptus, Linograptus and Pristiograptus. I t is suggested that there are several possible evolutionary origins fo r Egregiograptus, the most likely being from a Ludlow species of Neolo bograptus. Acanthograptus aculeatus neureaensis subsp. nov. is regarde d as an evolutionary derivative of A. a. aculeatus (Pocta); Coremagrap tus kalfusi praekalfusi subsp. nov. as an ancestor of C. k. kalfusi; T hallograptus acanthicus vandenbergi subsp. nov. to have evolved from T .a. acanthicus Boucek; and Dictyonema sherrardae mumbilensis subsp. no v. from D. s. sherrardae Rickards et al.