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 for "little stakes") consist of small pillars topped flatly, which can be cream, grey, or brown in color, sometimes creating a chevron pattern. Along the edges of the five arms, there is a fringe of long, sharp marginal spines, typically with brown bases and pale tips. The arms are broad and reach their maximum length of .