Spatangidae

The Spatangidae are a family of heart urchins. There are three recognised genera within the family; Granopatagus, Plethotaenia, and Spatangus. Additionally, Prospatangus was previously a recognised genus within the Spatangidae, but is now accepted as part of the genus Spatangus.

The Spatangidae are marine heart urchins that feed on subsurface deposits and graze.