The Mithrodiidae is a family of starfish in the order Valvatida.
Members of this family are big to huge tropical sea stars with 5 arms, rounded in cross-section.
List of genera and species Genus Mithrodia Gray, 1840 Mithrodia bradleyi Verrill, 1870 Mithrodia clavigera (Lamarck, 1816) Mithrodia fisheri Holly, 1932 Genus Thromidia Pope & Rowe, 1977 Thromidia brycei Marsh, 2009 Thromidia catalai Pope & Rowe, 1977 Thromidia gigas (Mortensen, 1935) Thromidia seychellesensis Pope & Rowe, 1977
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