Taxonomy:
Bergen et al. (2017) use the species but note that it has the same LAD as S. abies. They record an FAD in NN4 at Ceara Rise.
Distinguishing features: Like S. abies/moriformis but smaller, <4µm & base broad
Farinacci & Howe catalog pages: S. neoabies *
Size: Bukry & Bramlette proposed a size range of 2-4µm for S. neoabies, Backman proposed a size range of 2-3µm for S. compactus.
Tags | LITHS: nannolith-radiate, circular, cylindrical, CROSS-POLARS: R-prominent, |
Metrics | Lith size: 2->4µm; Data source notes: lith height from ODs |
Geological Range:
Notes: There have been suggestions that S. neoabies has a slightly higher top in the Pliocene than S. abies.
Last occurrence (top): within NN15 zone (3.70-3.92Ma, top in Zanclean stage). Data source: commonly recorded up to last occurrence of the genus.
First occurrence (base): within NN4 zone (14.91-17.95Ma, base in Burdigalian stage). Data source: Bergen et al. (2017)
Plot of occurrence data:
Backman, J. (1980). Miocene-Pliocene nannofossils and sedimentation rates in the Hatton-Rockall Basin, NE Atlantic Ocean. Stockholm Contributions in Geology. 36: 1-91. gs Bergen, J. A., de Kaenel, E., Blair, S. A., Boesiger, T. M. & Browning, E. (2017). Oligocene-Pliocene taxonomy and stratigraphy of the genus Sphenolithus in the circum North Atlantic Basin: Gulf of Mexico and ODP Leg 154. Journal of Nannoplankton Research. 37(2-3): 77-112. gs V O Bukry, D. & Bramlette, M. N. (1969b). Some new and stratigraphically useful calcareous nannofossils of the Cenozoic. Tulane Studies in Geology. 7: 131-142. gs V OReferences:
![]() |
Sphenolithus neoabies compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-4-2021
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1306 Go to Archive.is to create a permanent copy of this page - citation notes |