Distinguishing features:
Parent taxon (Miravetesina): Cretarhabdids with central area spanned by narrow axial cross and fine net.
This taxon: Like M. favula but medium-sized (6-8 µm), with more pronounced axial cross, and younger age. Late Creteceous
Taxonomy:
Farinacci & Howe catalog pages: M. bergenii *
Distinguishing features:
Parent taxon (Miravetesina): Cretarhabdids with central area spanned by narrow axial cross and fine net.
This taxon: Like M. favula but medium-sized (6-8 µm), with more pronounced axial cross, and younger age. Late Creteceous
Morphology:
Size:
LITHS: placolith, elliptical, CA: cross-axial, grill, ca_disjunct, CROSS-POLARS: R-prominent, rim-bicyclic, |
Lith size: 6->8µm; Data source notes: original description & illustrated specimens |
See also: Retecapsa ficula ;
Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.17Ma, top in Maastrichtian stage). Data source: Lees 2007 (original description)
First occurrence (base): within Turonian Stage (89.39-93.90Ma, base in Turonian stage). Data source: Lees 2007 (original description)
Plot of occurrence data:
Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 34-85. gs O Bralower, T. J. & Bergen, J. A. (1998). Cenomanian-Santonian calcareous nannofossil biostratigraphy of a transect of cores drilled across the Western Interior Seaway. In, Dean, W. E. & Arthur, M. A. (eds) Stratigraphy and paleoenvironments of the Cretaceous Western Interior Seaway. SEPM Concepts in Sedimentology and Paleontology . (6): -. gs Lees, J. A. (2007). New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research. 29(1): 39-65. gs O Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. gs References:
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Miravetesina bergenii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 8-2-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10686 Go to Archive.is to create a permanent copy of this page - citation notes |
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