Abstract
The Roquemaillère site on the southeastern margin of the French Massif Central is one of the rare localities along the Northern Gondwana margin from which Silurian odontopleurid trilobites have been recovered. Revision of M.-C. Chaubet’s collections from this site, presented in her monograph (1937), together with additional new records revealed the presence of Kettneraspis Prantl & Přibyl, 1949 with 5 species [K. acanthifrons sp. nov., K. cf. juengeri Santel, 2001, K. rojanensis sp. nov., K. anteflexa sp. nov., K. aff. parkini (Siveter, 1989)], Eoleonaspis Sheng, 1974 with E. maeander sp. nov., Radiaspis Richter & Richter, 1917 with Radiaspis sp., Laethoprusia Ramsköld, 1991 with L. augur sp. nov., and Ceratocephalina Whittington, 1956 with C. angustifurcata sp. nov. Evidence from associated graptolites, brachiopods, bivalves and conodonts assigns the trilobites to the late Wenlock Homerian stage. The diverse fauna is dominated, both in specific diversity and number of individuals by Kettneraspis. The absence of the closely related Leonaspis regarded as characterising Gondwana-related terranes from the late Silurian onwards, confirms the pre-Ludlow age of the Roquemaillère fauna. • Key words: odontopleurid trilobites, Silurian, Homerian, Montagne Noire, systematics.