Cookson and Hughes, 1964
From dinoflaj2
Cookson, I.C. and Hughes, N.F., 1964: Microplankton from the Cambridge Greensand (mid-Cretaceous). Palaeontology, v.7, no.1, p.37-59, pl.5-11.
Cookson, I.C. and Hughes, N.F., 1964: Microplankton from the Cambridge Greensand (mid-Cretaceous). Palaeontology, v.7, no.1, p.37-59, pl.5-11.
