Taxonomia

• Lineage:
• Root
/
• Animalia
/
• Echinodermata
/
• Echinoidea
/
• Holasteroida
/
• Pourtalesiidae

Pourtalesiidae (family)

• genusCeratophysa
• genusCystocrepis
• genusEchinocrepis
• genusEchinosigra
• genusHelgocystis
• genusPourtalesia
• genusRictocystis
• genusSolenocystis
• genusSpatagocystis