†Synnigia Sosnovskaya 1986

Sosnovskaya 1986. [Precambrian fossils of the group Newlandiida and their relationship with Coelenterata.] Sokolov, B.S.[Ed]. [Phanerozoic reefs and corals of the USSR.], Nauka, Moscow, 1986: 74-76. Chapter pagination: 17-19