761 I~onckenber~~an~,otUaea I ~0 I ~~) I ~~1-76~ I 1 Chart [ Frankfurt am Main, 29.12.20001 Annotations to the Devonian Correlation Table, B705di00 - B705ds00: Microvertebrate zonations of East Gondwana With 1 Chart SUSAN TURNER & CAROLE J. BURROW YOUNG & TURNER (2000) have recently presented an over- view the Devonian vertebrate (both macro- and microfossil) zonations of East Gondwana. Microvertebrate evidence for and across the Si|uro-Devonian boundary are not yet well constrained in Australia (e. g., YOUN6 1996). Late Silurian taxa are dealt with by BURROW& TURNER (2000 and in P1CK- ETT et al. in press). T~RNER (1997) reviewed the evidence for changes in thelodont assemblages in East Gondwana. BASDEN et al. (2000), JONES et al. (2000) and TURNEa et al. (2000) have dealt with di to ds microvertebrate faunas in Australia. A preliminary analysis of changes in the Devonian microverte- brate assemblages correlated with the pattern and timing of transgressions and regressions was given in TURNER& YOUNG (1997). BURROW (2000) has explored further the changes in microvertebrate assemblages from Early Devonian marine limestones; her detailed chart is appended here (chart 1). di 1.0 First acanthodian is a poracanthodidid cf. Zemlya- canthus menneri (VALI~nEvICIUS) of the Lochkovian of arc- tic Russia. Poracanthodids are now recognised as useful zone fossils in the Late Silurian to Early Devonian. di 2.5 lncoming of a presumed teleostome, Lophosteus in- crementus BURROW 1995, similar to forms known forro the Pridoli and early Lochkovian of the Baltic states and the arctic (e. g., MXRSS 2000). di 5.0 The earliest placoderm remains in east Gondwana ate all known from microremains (BwRROW& TURYER 1998). Preliminary assessments (e. g. BURROWin YOUNG 1996) have been reduced to 4 taxa - a protobrindellaspid, a murrid- alaspid, a romundinid anda ?palaeacanthaspid (BURROW 2000), some of which are close to taxa from the Lochkovian of south China (BuRROW et al. 2000). di 1 1.0 BASDEN (1999) has described well preserved thelo- dont scales incoming at the dehiscens Conodont Zone from the Buchan Group of Victoria and the Cavan and Marjugong formations of New South Wales which might be best placed in a new species. However, many of the scales resemble those of Turinia australiensis the type specimens of which are waterworn (TuRNER 1997). di 19.5 Incoming of Cheiracanthoides comptus a taxon typ- ical of latest Emsian and Eifelian in the northern hemisphere. dm 15.50ne phoebodont shark tooth attributed to Phoe- bodus sophiae (TuRYER et al. 2000) has been found in the Givetian (mid-varcus Conodont Zone) of north Queensland. This marks the first record of phoebodont sharks in Australia (for others see JONES et al. 2000, YOUyG & TURNER 2000). Phoebodont shark teeth now provide a useful zonation for correlating marine and marginal marine rocks worldwide (e. g., GINTER 1998). ds 0.0 Australolepis seddoni incoming at lowest Frasnian Gneudna Formation of Carnarvon Basin and equivalent strata in Iran (GHOLAMALIAN et al. 2000; TR1NAJSTIC in pres-s; TURN- ER 1997; YAZOl & TURNER in press); similar scales (probably same species in beds just prior to the lower Kellwasser Event in the Virgin Hills Formation of the Canning Basin (TURNER 1997; TRINAJST1C 2000). Variation in scales of Moythomasia and Mimia which ap- pear in the early Frasnian both in Carnarvon and Canning Basin samples has been dealt with by TRINAJSTIC (1999a, b). ds 4.2 TRINAJSTIC (2000) has recognised phoebodont teeth in conodont samples just prior to the Kellwasser event hori- zons in Canning Basin samples of the Virgin Hills Formation. d s 18 Rare worn phoebodont teeth are known from the Gumhole Formation of the Canning Basin; they are probably Phoebodus limpidus. Early Carboniferous, mid-Tournaisian [formerly ds 16.5]. Thrinacodusferox (TuRNER 1982) was first found in Australia from an isolated outcrop of uncertain Late Devonian age. Subsequently, it was discovered in the Teddy Mount Forma- tion in beds dated by conodonts as expansa Conodont Zone (as dated by LANC 1986). More recent work by MAWSON & Authors' addresses: Dr SUSANTURNER, Queensland Museum, P. O. Box 3300; S. Brisbane, Queensland 4101, Australia. E-mail: Coen- SueT@qm.qld.gov.au. Dr CAROLE J. BURROW,Department of Zoology & Entomology, University of Queensland; Queensland 4072, Australia.