Sphenolithus spiniger


Classification: ntax_cenozoic -> Discoasterales -> Sphenolithaceae -> Sphenolithus -> S. radians group -> Sphenolithus spiniger
Sister taxa: S. arthurii, S. orphanknollensis, S. pseudoradians, S. radians, S. richteri, S. runus, S. spiniger

Taxonomy:

Citation: Sphenolithus spiniger Bukry, 1971
Rank: Species

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°.

Farinacci & Howe catalog pages: S. spiniger *

Search data:
TagsLITHS: nannolith-radiate, circular, cylindrical, CA: process, CROSS-POLARS: V-prominent, R-prominent,
MetricsLith size: 4->8µm;
Data source notes: 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:

References:

Bown, P. R. & Dunkley Jones, T. (2012). Calcareous nannofossils from the Paleogene equatorial Pacific (IODP Expedition 320 Sites U1331-1334). Journal of Nannoplankton Research. 32(2): 3-51. gs V O

Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs V O

Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs V O

Bukry, D. (1971b). Cenozoic calcareous nannofossils from the Pacific Ocean. San Diego Society of Natural History Transactions. 16: 303-327. gs

Fioroni, C., Villa, G., Persico, D. & Jovane, L. (2015). Middle Eocene-Lower Oligocene calcareous nannofossil biostratigraphy and paleoceanographic implications from Site 711 (equatorial Indian Ocean). Marine Micropaleontology. 118: 50-62. gs

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. gs

Perch-Nielsen, K. (1977a). Albian to Pleistocene calcareous nannofossils from the Western South Atlantic, DSDP Leg 39. Initial Reports of the Deep Sea Drilling Project. 39: 699-823. gs V O

Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

Self-Trail, J. (2011). Paleogene Calcareous Nannofossils of the South Dover Bridge core, Southern Maryland (USA). Journal of Nannoplankton Research. 32(1): 1-28. gs V O

Shamrock, J. L. & Watkins, D. K. (2012). Eocene calcareous nannofossil biostratigraphy and community structure from Exmouth Plateau, Eastern Indian Ocean (ODP Site 762). Stratigraphy. 9(1): 1-11. gs

Shepherd, C. L. & Kulhanek, D. K. (2016). Eocene nannofossil biostratigraphy of the mid-Waipara River section, Canterbury Basin, New Zealand. Journal of Nannoplankton Research. 26(1): 33-59. gs V O

Varol, O. (1998). Palaeogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 200-224. gs


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Sphenolithus spiniger compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-1-2021

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1322 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (1)

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Alonso Rincon (Instituto Mexicano del Petróleo, Mexico)
Hello everyone. Some authors placed the extinction of S. spiniger in the biozone NP15 (Bown, 2005), but others authors in the biozone NP17 (Fornaciari et al, 2010; Shamrock 2010; Fensome, 2008; Toffanin et al, 2013. This can be attributed to the different geographical areas of studies? Greetings!!
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Jeremy Young (UCL, UK)
Hi Alonso
Interesting question - however a quick check of Bown 2005 (Tanzania paper) shows that he is quoting the occurrences observed in that area and that they had a gap in coverage from NP15 to mid NP17 so his data is not incompatible with a consistent LAD in NP17. I will adjust the nannotax entry following the reference you cite.
Jeremy
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Alonso Rincon (Instituto Mexicano del Petróleo, Mexico)
thank you very much for your comments, I found it very helpful. Alonso.
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