Taxonomy:
Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage). Data source:
First occurrence (base): within (-Ma, base in "Holocene" stage). Data source:
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 Martin, F. & Dean, W. T. (1981). Middle and upper Cambrian and Lower Ordovician acritarchs from Random Island, eastern Newfoundland. Bulletin of the Geological Survey of Canada. 343: 1-43. gsReferences:
Acritax - Acritax_Camb - Cristallinium ovillense by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-5-2021
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