Habib and Drugg, 1983
From dinoflaj3
Habib, D. and Drugg, W.S., 1983: Dinoflagellate age of Middle Jurassic-Early Cretaceous sediments in the Blake-Bahama Basin. In: Sheridan, R.E. et al., Deep Sea Drilling Project, Washington, Initial Reports, v.76, p.623-638, pl.1-3.