Abstract: Potangaspis parvoculatus, a new genus and species of the Antarctaspidae (Placodermi: Arthrodira), is described from the early Emsian (Yukiang Formation, Early Devonian) of Pingguo,Guangxi, China. This new form is characterized by small orbits enclosed by skull roof, and long, narrow nuchal plate on which the central and supraorbital sensory canals, middle and posterior pit-lines converge. Phylogenetic analysis corroborates the basal position of the family Antactaspidae amongst the Arthrodira, and suggests a sister group relationship between the new form andAntarctaspis mcmurdoensis from the Middle Devonian of Antarctic, thus providing additional evidence to support the biogeographic proximity between South China and East Gondwana during the early Emsian.