Bailiaspis Resser, 1936, is a Middle Cambrian (Miaolingian) trilobite genus belonging to the Family Conocoryphidae Angelin, 1854. Within the Acado-Baltic region, the genus ranges from Wuliuan into Guzhangian age strata (Ptychagnostus gibbus to Lejopyge laevigata Biozones in terms of Scandinavian biostratigraphic terminology).