Abstract: A new galeaspid genus, which has been excavated from Bobai, southeastern Guangxi, is described in the present paper. The fossil-bearing strata consist mainly of pale silty mudstone and greyish sandstone, yielding abundant fishes (Guangsipetalichthys bobaiensis, Bothriolepis sp., Hunanolepis tieni, sinolepids, sarcopterygians,etc.)and some invertebrates. According to the associated placoderms, the new galeaspid is regarded as Middle Devonian in age. It is the first convincing record of the Middle Devonian galeaspids in China, thus has an important biostratigraphic and biogeographic significance.