Taxonomy:
Distinguishing features: Central areas with axial cross;
Process 5-6 µm high, tall stem supports narrow cone of four elements.
Farinacci & Howe catalog pages: Papposphaera thomsenii *
Size: Coccoliths 1.5-2 µm long;
Tags | LITHS: murolith, elliptical, RIM: outer wall non-imbricate, rim-narrow, rim-top crenulate, CA: cross, cross-axial, PROCESS: calyx, spine, tall, CSPH: oblate (broad), ovoid, spherical, CFC, CFC+process, polymorphic, DETAILS: ca_disjunct, |
Metrics | Lith size: 1.5->2µm; Sources: |
Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in stage). Data source: [JRY rough estimate]
Plot of occurrence data:
Norris, R. E. (1983). The family position of Papposphaera Tangen and Pappomonas Manton & Oates (Prymnesiophyceae) with records from the Indian Ocean. Phycologia. 22(2): 161-169. gs Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research, Special Issue. 1: 1-132. gsReferences:
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Papposphaera thomsenii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-12-2019
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