Diadematidae
The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow.Astropyga Gray, 1825
- *Astropyga radiata, extant
- *Astropyga pulvinata, extant
- *Astropyga magnifica, extant
- Centrostephanus Peters, 1855
- *Centrostephanus asteriscus, extant
- *Centrostephanus coronatus, extant
- *Centrostephanus fragile, Santonian, Maastrichtian, Danian
- *Centrostephanus longispinus, extant
- *Centrostephanus nitidus, extant
- *Centrostephanus rodgersii, extant
- Chaetodiadema Mortensen, 1903
- *Chaetodiadema granulatum, extant
- *Chaetodiadema keiense, extant
- *Chaetodiadema tuberculatum, extant
- Diadema Gray, 1825
- *Diadema palmeri, extant
- *Diadema savignyi, extant
- *Diadema setosum, extant
- *Diadema antillarum, extant
- *Diadema paucispinum, extant
- *Diadema mexicanum, extant
- *Diadema ascensionis, extant
- Echinodiadema Verrill, 1867
- *Echinodiadema coronata, extant
- Echinothrix Peters, 1853
- *Echinothrix calamaris, extant
- *Echinothrix diadema, extant
- Eodiadema, Lower Jurassic
- Eremopyga Agassiz & Clark, 1908
- *Eremopyga denudata, extant
- Goniodiadema Mortensen, 1939
- *Goniodiadema mauritiense, extant
- Kamptosoma Mortensen, 1903, extant
- Palaeodiadema, Santonian, Maastrichtian, Danian
- Pedinothuria Louis, 1897
- *Pedinothuria cidaroides, Callovian, Oxfordian