• Gymnaster Kitamura, 1937 (unaccepted) [Family: Asteraceae]
• Gymnaster Schütt, 1891 (unaccepted) [Family: Actiniscaceae]
• Gymnaster pentasterias Schütt accepted as Actiniscus pentasterias (Ehrenberg) Ehrenberg, 1844
• Gymnasteria Gray, 1840 accepted as Asteropsis Müller & Troschel, 1840
• Gymnasteria biserrata von Martens, 1866 accepted as Asteropsis carinifera (Lamarck, 1816)
• Gymnasteria carinifera von Martens, 1866 accepted as Asteropsis carinifera (Lamarck, 1816)
• Gymnasteria inermis Gray, 1840 accepted as Asteropsis carinifera (Lamarck, 1816)
• Gymnasteria lissotergum Benham, 1911 accepted as Asteropsis lissoterga (Benham, 1911)
• Gymnasteria spinosa Gray, 1840 accepted as Asteropsis carinifera (Lamarck, 1816)
• Gymnasteria valvulata Perrier, 1875 accepted as Asteropsis carinifera (Lamarck, 1816)
• Gymnasterias accepted as Porania Gray, 1840
• Gymnasterias carinifera Bell, 1893 accepted as Asteropsis carinifera (Lamarck, 1816)
• Gymnasteriidae accepted as Asteropseidae Hotchkiss & Clark, 1976