Echinocardium australe

Echinocardium australe is a sea urchin in the family, Loveniidae, first described by John Edward Gray in 1851,[1][2] from specimens collected in Port Jackson and Tasmania.

[2] It is a synonym of Echinocardium cordatum.

[1][3]

Lohrer, D, 2003, Burrowing by heart urchins: an important function in soft-sediment ecosystemsThis article about a sea urchin is a stub.

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Underside view of test of Echinocardium australe