Taxonomy:
Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage).
First occurrence (base): within (-Ma, base in "Holocene" stage).
Plot of occurrence data: <% graph_caption %>
Cramer, F. H. & Diez, M. d. C. R. (1972). Subsurface Section from Portuguese Guinea Dated by Palynomorphs as Middle Silurian. Bulletin of the American Association of Petroleum Geologists. 56(11, Part 1): 2271-2272. gs Fensome, R. A., Williams, G. L., Barss, M. S., Freeman, J. M. & Hill, J. M. (1990). Acritarchs and fossil prasinophytes; an index to genera, species and infraspecific taxa. Contributions Series American Association of Stratigraphic Palynologists. 25: 1-771. gsReferences:
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