†Amphigeisina renae Missarzhevsky and Mambetov 1981 (arrow worm)
Full reference: V. V. Missarzhevsky and A. M. Mambetov. 1981. Stratigrafiya i fauna pogranichnykh sloyev Kembriya i Dokembriya Malogo Karatau [Stratigraphy and fauna of the Precambrian-Cambrian boundary beds of the Malyy Karatau]. Trudy Ordena Trudovogo Krasnogo Znameni Geologicheskiy Institut Akademiya NAUK SSSR 326:1-90
Belongs to Amphigeisina according to V. V. Missarzhevsky and A. M. Mambetov 1981
Sister taxa: none
Type specimen: Its type locality is Aktugay, bed 6, which is in an Atdabanian marine dolomite in the Shabakty Formation of Kazakstan
Ecology: nektonic carnivore