Taxonomy:
Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage). Data source:
First occurrence (base): within (-Ma, base in stage). Data source:
Plot of occurrence data: Parent: Multiplicisphaeridium
Cramer, F.H. & Diez de Cramer, M.d.C.R., (1972). North American Silurian palynofacies and their spatial arrangement; acritarchs. Palaeontographica Abteilung B Palaeophytologie, 138(5-6): 107-179.GS Cramer, F.H. & Diez de Cramer, M.d.C.R., (1972). Subsurface Section from Portuguese Guinea Dated by Palynomorphs as Middle Silurian. The American Association of Petroleum Geologists Bulletin, 56(11, Part 1): 2271-2272.GS Cramer, F.H. & Diez de Cramer, M.d.C.R., (1972). Acritarchs from the Upper Middle Cambrian Oville Formation of Leon, northwestern Spain. Revista Espanola de Micropaleontologia.: 39-50.GSReferences:
Acritax - Acritax_Camb - Multiplicisphaeridium martae by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-6-2019
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