Rhizomolgula

Rhizomolgula is a genus of ascidian tunicates in the family Molgulidae.

Species within the genus Rhizomolgula include:
 * Rhizomolgula globularis (Pallas, 1776)
 * Rhizomolgula japonica Oka, 1926

Species names currently considered to be synonyms:
 * Rhizomolgula arenaria Ritter, 1901 : synonym of Rhizomolgula globularis (Pallas, 1776)
 * Rhizomolgula gigantea Redikorzev, 1907 : synonym of Rhizomolgula globularis (Pallas, 1776)
 * Rhizomolgula intermedia Michaelsen, 1908 : synonym of Rhizomolgula globularis (Pallas, 1776)
 * Rhizomolgula ritteri Hartmeyer, 1903 : synonym of Rhizomolgula globularis (Pallas, 1776)
 * Rhizomolgula warpachovskii Redikorzev, 1908 : synonym of Rhizomolgula globularis (Pallas, 1776)