Hemipneustidae

Hemipneustidae is an extinct family of sea urchins.

Genera

• Hemipneustes <small>L. Agassiz, 1835</small> â€Â
• Medjesia <small>Jeffery, 1997</small> â€Â
• Opisopneustes <small>Gauthier, 1889</small> â€Â
• Plesiohemipneustes <small>Smith & Wright, 2003</small> â€Â
• Toxopatagus <small>Pomel, 1883</small> â€Â

References