Smith and Harding, 2004
From dinoflaj2
Smith, G.A. and Harding, I.C., 2004: New dinoflagellate cyst species from Upper Jurassic to Lower Cretaceous sediments of the Volgian lectostratotype sections at Gorodische and Kashpir, Volga Basin, Russia. Review of Palaeobotany and Palynology, v.128, p.355-379, pl.1-6.
