Description: Distinctive stellate discoaster with 5 or 6 tapering free rays and a central area crossed by high inter-ray ridges that form a stellate boss.
Remarks: Arms frequently broken off, leaving a Catinaster-like central area.
Range: NP9 to NP10.
Neogene: Catinaster; Discoaster
Paleogene: Discoaster mahmoudii