The first described specimens of
Wutubus annularis were found in the Shibantan Member of the
Dengying Formation in the Yangtze Gorges area of South China, which dates to 551-541 Mya during the late Ediacaran. Specimens have since been reported in late Ediacaran rocks of the
Deep Spring Formation at Mount Dunfee,
Nevada (USA). The genus name
Wutubus is derived from the name of the fossil locality near the village of Wuhe (Wu River) and from the Latin word
tubus, to mean tube. The species epithet
annularis is derived directly from the Latin word,
annularis, with reference to the transverse annulae on the tube. == Description ==