Harding, 1998
From dinoflaj3
Harding, I.C., 1998: A minute new cladopyxiinean dinocyst from Barremian (Cretaceous) sediments and its bearing on the acritarch vs. dinoflagellate cyst question. Review of Palaeobotany and Palynology, v.100, p.89-98, pl.1-2.