Albert et al., 1986
From dinoflaj2
Albert, N.R., Evitt, W.R. and Stein, J.A., 1986: Lacrymodinium, n. gen., a gonyaulacoid dinoflagellate with intercalary archeopyle from the Jurassic and Early Cretaceous of California and Alaska. Micropaleontology, v.32, no.4, p.303-315, pl.1-2.
