The Spatangidae are a family of heart urchins. There are four recognised genera within the family; Maretia, Paramaretia, Pseudomaretia and Spatangus

Spatangus

Spatangus is a genus of heart urchins in the Spatangidae family. The genus is synonymous with the previously recognised genera Prospatangus Lambert, 1902 and Spatagus. There are nine recognised species...

. Additionally, Spatagus and Prospatangus were previously recognised genera within the Spatangidae, but are now accepted as part of the genus Spatangus.

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

Grazing

Grazing generally describes a type of feeding, in which a herbivore feeds on plants , and also on other multicellular autotrophs...

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