Sphenolithus spiniger
Classification: Coccolithophores -> Discoasterales -> Sphenolithaceae -> Sphenolithus -> S. radians group -> Sphenolithus spiniger
Sister taxa: S. arthurii, S. orphanknollensis, S. pseudoradians, S. radians, S. richteri, S. runus, S. spiniger,
Distinguishing features: Small to medium sized (height 4.0-9.4 µm) with short spine, narrow triangular shape (dart shaped). Lower quadrants are largest and the compound spine is dark at 0°.
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Taxonomy:
Citation: Sphenolithus spiniger Bukry, 1971Rank: Species
Farinacci & Howe catalog pages: Sphenolithus spiniger *
Distinguishing features: Small to medium sized (height 4.0-9.4 µm) with short spine, narrow triangular shape (dart shaped). Lower quadrants are largest and the compound spine is dark at 0°.
Search data:
| Tags | LITHS: nannolith-radiate, N: 3D-radiate, conical, circular, PROCESS: length-fast, multicrystalline, spine,
CSPH: not known, R-UNITS: all, lower-tier, spine, middle-tier, DETAILS: isogyres radial, |
| Metrics | Lith size: 4->8µm;
Sources: lith height from OD and illustrated specs |
The morphological data given here can be used on the advanced search page. See also these notes
Geological Range:
Notes: See comments below for discussion of LAD
Last occurrence (top): within NP17 zone (37.32-40.40Ma, top in Priabonian stage). Data source: Fornaciari et al, 2010
First occurrence (base): within NP14 zone (46.29-49.11Ma, base in Ypresian stage). Data source: Perch-Nielsen 1985
Plot of occurrence data:
- Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
- Triangles indicate an event for which a precise placement has been suggested
- Histogram - Neptune occurrence data from DSDP and ODP proceedings. Interpret with caution & read these notes
- Taxon plotted: Sphenolithus spiniger, synonyms included - Sphenolithus spiniger; Parent: S. radians group
References:Bukry, D., (1971). Cenozoic calcareous nannofossils from the Pacific Ocean. San Diego Society of Natural History Transactions, 16: 303-327.
Fornaciari, E.; Agnini, C.; Catanzariti, R.; Rio, D.; Bolla, E.M. & Valvasoni, E., (2010). Mid- Latitude calcareous nannofossil biostratigraphy and biochronology across the middle to late Eocene transition. Stratigraphy, 7(4): 229-264.
Perch-Nielsen, K., (1985). Cenozoic calcareous nannofossils. In: Bolli, H.M., Saunders, J.B. and Perch-Nielsen, K. (Editors), Plankton Stratigraphy. Cambridge University Press, Cambridge, pp. 427-555.
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Sphenolithus spiniger compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-7-2018
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