Gartnerago nanum


Classification: Mesozoic -> Arkhangelskiales -> Kamptneriaceae -> Gartnerago -> Gartnerago nanum
Sister taxa: G. obliquum, G. segmentatum, G. costatum, G. diversum, G. stenostaurion, G. clarusora, G. chiasta, G. margaritatus, G. praeobliquum, G. coxalliae, G. nanum, G. ponticula, G. theta, G. sp.,

Distinguishing features: Medium-sized Gartnerago with a loxolith-type rim and a narrow, perforate central area plate, which has differentiated axial bars, although the longitudinal bar may be subordinate or poorly defined.


Taxonomy:

Citation: Gartnerago nanum Thierstein, 1974
Rank: Species

Farinacci & Howe catalog pages: Gartnerago nanum *

Distinguishing features: Medium-sized Gartnerago with a loxolith-type rim and a narrow, perforate central area plate, which has differentiated axial bars, although the longitudinal bar may be subordinate or poorly defined.


Size: Length 6.5-7.5 µm

Geological Range:
Last occurrence (top): at top of UC3c subzone (100% up, 94.8Ma, in Cenomanian stage). Data source: Burnett 1998 (zonal marker)
First occurrence (base): at base of UC1a subzone (0% up, 100.5Ma, in Cenomanian stage). Data source: Burnett 1998

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Gartnerago nanum, synonyms included - Gartnerago nanum; space-time plot :: Samples map :: Parent: Gartnerago

    References:

    Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs

    Jeremiah, J. (1996). A proposed Albian to Lower Cenomanian nannofossil biozonation for England and the North Sea Basin. Journal of Micropalaeontology. 15(97-129): -. gs

    Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 30(1): 39-56. gs

    Thierstein, H. R. (1974). Calcareous nannoplankton - Leg 26, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 26: 619-667. gs


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    Gartnerago nanum compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-9-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10464 Go to Archive.is to create a permanent copy of this page - citation notes



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