Template:Sims et al., 1989
Appearance
- Sims, P.A., Fryxell, G.A. & Baldauf, J.G. 1989. Critical Examination of the Diatom Genus Azpeitia: Species useful as stratigraphic markers for the Oligocene and Miocene Epochs. Micropaleontology 35(4): 293–307. doi:10.2307/1485673.