Gamaster
Gamaster is a genus of ascidian tunicates in the family Molgulidae.
Species within the genus Gamaster include:Gamaster dakarensis Pizon, 1896 Gamaster guillei Monniot, 1994 Gamaster vallatum Monniot, 1978
Species names currently considered to be synonyms:Gamaster japonicus Oka, 1934: synonym of ''Eugyra japonicus''