Distinguishing features:
Parent taxon (P. spinosa group): Elliptical Prediscophaera species with an axial cross
This taxon: Small (4-6 µm); inner-rim cycle narrow, axial cross delicate
Taxonomy:
Farinacci & Howe catalog pages: P. mgayae *
Distinguishing features:
Parent taxon (P. spinosa group): Elliptical Prediscophaera species with an axial cross
This taxon: Small (4-6 µm); inner-rim cycle narrow, axial cross delicate
Morphology:
Size:
LITHS: placolith, elliptical, CA: cross-axial, process, ca_disjunct, CROSS-POLARS: V-prominent, rim-bicyclic, |
Lith size: 4->6µm; Segments: 16->16; Data source notes: holotype +/- 1 µm |
Geological Range:
Last occurrence (top): within Early Maastrichtian Substage (70.10-72.17Ma, top in Maastrichtian stage). Data source: Lees 2007 (original description)
First occurrence (base): in upper part of UC16 zone (80% up, 72.7Ma, in Campanian stage). Data source: Thibault 2010 - within UC16Dtp (p45)
Plot of occurrence data:
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 Perez-Rodriguez, I., Lees, J. A., Larasoaña, J. C., Arz, J. A. & Arenillas, I. (2012). Planktonic foraminiferal and calcareous nannofossil biostratigraphy and magnetostratigraphy of the uppermost Campanian and Maastrichtian at Zumaia, northern Spain. Cretaceous Research. 37: 100-126. gs Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. gs References:
![]() |
Prediscosphaera mgayae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 30-4-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10937 Go to Archive.is to create a permanent copy of this page - citation notes |
![]() |
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
Comments