Bibliographic Detail
Sims, P.A., Fryxell, G.A. & J.G.Baldauf, 1989
Reference:
Sims, P.A., Fryxell, G.A. & J.G.Baldauf (1989). Critical examination of the diatom genus Azpeitia: species useful as stratigraphic markers for the Oligocene and Miocene epochs. Micropaleontology 35(4): 293-307, 3 pl.