Tabla de Contenidos: “…A PRELIMINARY ANALYSISASPECTS OF SOME LATE MIDDLE CAMBRIAN TASMANIAN FAUNAL ASSEMBLAGES; FLUCTUATIONS IN TRILOBITE PALAEOBIODIVERSITY DURING THE DEVONIAN IN THE ARDENNES MASSIF; MIDDLE CAMBRIAN TRILOBITES OF LA LAJA FORMATION, WESTERN ARGENTINA; NEW POST-CAMBRIAN TRILOBITE ASSOCIATIONS FROM MONGOLIA; DALMANITOID AND ACASTOID TRILOBITES AND THEIR EVOLUTION IN THE PRAGUE BASIN (CZECH REPUBLIC)…”