Distinguishing features: Quadriangular (height = width) with slightly concave outer walls
Taxonomy:
Farinacci & Howe catalog pages: Nannoconus donnatensis *
Distinguishing features: Quadriangular (height = width) with slightly concave outer walls
Geological Range:
Last occurrence (top): within Albian Stage (100.50-112.95Ma, top in Albian stage). Data source: Perch-Nielsen 1985
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian stage). Data source: Perch-Nielsen 1985
Plot of occurrence data:
Deres, F. & Achéritéguy, J. (1980). Biostratigraphie des Nannoconides. Bulletin des Centres de Recherches Exploration-Production Elf-Aquitaine. 4: 1-53. gsReferences:
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Nannoconus donnatensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 8-12-2019
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