Taxonomy:
Distinguishing features: Pontosphaera with flaring rim, central area with two large openings [my interpretation - JRY 2017]
Farinacci & Howe catalog pages:
Search data:Tags | LITHS: murolith, elliptical, CA: ca_conjunct, plate, pores, bar, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent, |
Metrics | Lith size: 8->12µm; |
Geological Range:
Last occurrence (top): within Early Eocene Sub-Epoch (47.84-55.96Ma, top in Ypresian stage). Data source:
First occurrence (base): within Early Eocene Sub-Epoch (47.84-55.96Ma, base in Ypresian stage). Data source:
Plot of occurrence data:
Bramlette, M. N. & Sullivan, F. R. (1961). Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology. 7(2): 129-188. gs Perch-Nielsen, K. (1971c). Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3): 1-76. gsReferences:
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Pontosphaera sp.A compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-1-2021
Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1098 Go to Archive.is to create a permanent copy of this page - citation notes |