On the upper surface paxillae (Latin, "little stakes"), little pillars with flattened summits, are cream, grey or brown, the colours sometimes making a chevron pattern. Along the edges of the five arms there is a fringe of long, sharp marginal spines, usually with brown bases and pale tips. The arms are fairly broad and have a maximum length of .
On the upper surface paxillae (Latin, "little stakes"), small pillars with flat tops, are white, gray or brown, the colors sometimes forming a chevron pattern. Along the edges of the five arms there is a border of long, sharp marginal spines, usually with brown bases and pale tips. The arms are relatively wide and have a maximum length of .