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Eastonian trilobite faunas of the Gordon Group in Tasmania include the new species Ceraurinella oepiki, Erratencrinurus trippi, and Pliomerina trisulcata, as well as a reedocalymeninid probably allied to Sarrabesia Hammann & Leone, 1997. Ceraurinella and Erratencrinurus have not previously been reported from Australia, the former being predominantly Laurentian but also known from NE China, the Himalaya, and Vietnam, and the latter mostly Baltic/Laurentian. Peri-Gondwanan species of Ceraurinella appear to form a clade, within which Tasmanian and Indian (central Himalayan) taxa are closest relatives.

A silicified trilobite fauna is described from an un-named Early Devonian (late Zlichovian-early Dalejan) limestone at Mudgee, N.S.W. The fauna includes eleven taxa as follows: Proetus sp., Cornuproetus ? sp., Astycoryphe sp., Cyphaspis sp., Harpidae gen. et sp. indet., Phacops (Phacops) sp., Crotalocephalus struszi sp.nov., Acanthopyge (Lobopyge) campbelli sp.nov., Terranovia? sp.nov., Dudleyaspis sp. cf. D. campbelli (Chatterton 1971) and Radiaspis bispinosa? (Chatterton 1971). Terranovia has not been previously described from Australia.

The graptolite-bearing sequence across the Ordovician-Silurian boundary at Darraweit Guim, central Victoria is subdivided into four biostratigraphic units: the Dicellograptus ornatus-Climacograptus latus Zone, Climacograptus? extraordinarius Zone, Glyptograptus? persculptus Zone and Parakidograptus acuminatus Zone. Diagnostic graptolites of the upper three zones are described, and the trilobite D. (Dalmanitina) darraweitensis Campbell, characteristic of the C? extraordinarius Zone, is revised and assigned to the genus Songxites Lin within the subfamily Mucronaspidinae. Detailed correlation of the Darraweit Guim sequence with the Ordovician-Silurian boundary sequences of Dob's Linn (Scotland), Mirny Creek (northeastern Siberia), Chu-Ili Range (Kazakhstan), the Yangtze Gorge region (Hubei) and the northern Cordillera (Canada) is made on the basis of short-lived, cosmopolitan graptolite species. The relevant rock units at Darraweit Guim are defined for the first time.

An assemblage of well-preserved Devonian trilobites is described from limestones in Satun Province, southern Thailand. The biogeographic implications are briefly discussed. The fauna, which is of Early Devonian age, probably Emsian, includes Decoroproetus, Cornuproetus, Platyscutellum and two species of Reedops, one of which is new. No similar fauna has been described before from the Shan-Thai block. The fauna is a typical Hercynian assemblage with close specific comparisons with Turkey, Morocco and Bohemia.

Cybele bellatula (Dalman), the type species of Cybele, is redescribed from the lower Kunda Stage (uppermost Arenig-lowest Llanvim) of Ostergotland and a lectotype is chosen. Comparative material from Norway is also illustrated. A smooth triangular area on the anteromesial part of the glabella bears a deep pit and is probably a muscle insertion structure equivalent to the median pits or furrows in other cybelines, notably Cybeloides, Bevanopsis and Cybelurus. A new species, Atractopyge dalmani, is described on the basis of specimens from the Upper Jonstorp Formation (middle Harjuan-middle Ashgill) of Vastergotland. These specimens were once thought to include the holotype of A. verrucosa, the type species of Atractopyge, to which A. dalmani was probably closely related.