Decapods from the Boom Clay (Rupelian, Oligocene) in Belgium

Two decapod taxa Coeloma (Paracoeloma) rupeliense and Homarus percyi from the Belgian Rupelian (middle Oligocene) strata are redescribed and discussed. For Coeloma (Paracoeloma) rupeliense only male specimens are known from these strata. For Homarus percyi only heterochelate chelipeds are found; the crushing claw can be left or right depending on ontogenetical coincidence.