 The specimen subsequently decayed, leaving a void showing a detailed outline of the creature.The CT scan revealed that "H. argus" had two sets of eyes - one set mounted on the ocularium in the middle of head and one set on its side on the stink glands.Performing comparative analysis on 158 morphological features, Garwood's team determined "H. argus" was closely related to "Eophalangium sheari".