Helby, 1987
From dinoflaj2
Helby, R., 1987: Muderongia and related dinoflagellates of the latest Jurassic to Early Cretaceous of Australasia. In: Jell, P.A. (editor), Studies in Australian Mesozoic palynology; Memoir of the Association of Australasian Palaeontologists, no.4, p.297-336.
