Ipipi elihlanganayo (noma ipipi eliphindwe kabili ) yisici esingajwayelekile sokuzalwa lapho kuvela khona izigubhu ezimbili zangasese Ama-marsupial amaningi amaningi wesilisa anjenge- kangaroo ngokwemvelo anepipi elihlukanisiwe, elinama-prongs angakwesobunxele nangakwesokudla afakwa emiseleni eminingi yangasese ngasikhathi sinye.