Gartnerago obliquum


Classification: Mesozoic -> Arkhangelskiales -> Kamptneriaceae -> Gartnerago -> Gartnerago obliquum
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: Gartnerago with a narrow rim and a broad central area, filled with a plate pierced by numerous pores (~>10 in each quadrant); the plate is crossed by sutures, the transverse of which is slightly oblique.


Taxonomy:

Citation: Gartnerago obliquum (Stradner, 1963) Noël, 1970
Rank: Species
Basionym: Arkhangelskiella obliqua Stradner, 1963
Synonyms:

Farinacci & Howe catalog pages: A. obliqua * , A. oblata * , A. inclinata * , A. concava * , A. magnacava * , A. scapha *

Distinguishing features: Gartnerago with a narrow rim and a broad central area, filled with a plate pierced by numerous pores (~>10 in each quadrant); the plate is crossed by sutures, the transverse of which is slightly oblique.

Search data:
TagsLITHS: placolith, elliptical, CA: plate, pores, closed, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 6->13µm;
Data source notes: original descriptions & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Coniacian Stage (86.26-89.77Ma, top in Coniacian stage). Data source: Burnett 1998
First occurrence (base): in mid part of UC2c subzone (50% up, 96.7Ma, in Cenomanian stage). Data source: Burnett 1998, fig.6.2

Plot of occurrence data:

References:

Bukry, D. (1969). Upper Cretaceous coccoliths from Texas and Europe. University of Kansas Paleontological Contributions, Articles. 51 (Protista 2): 1-79. gs V O

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

Crux, J. A. (1980). A biostratigraphical study of Upper Cretaceous nannofossils from South-east England and North France. PhD thesis, University College London. -. gs

Hattner, J. G. & Wise, S. W. (1980). Upper Cretaceous calcareous nannofossil biostratigraphy of South Carolina. South Carolina Geology. 24: 41-117. gs

Manivit, H. (1989). Calcareous nannofossil biostratigraphy of Leg 108 sediments. Proceedings of the Ocean Drilling Program, Scientific Results. 108: 35-69. gs V O

Noël, D. (1970). Coccolithes Crétacés: La Craie Campanienne du Bassin de Paris. Éditions du Centre National de la Recherche Scientifique, Paris. -. gs

Reinhardt, P. (1967). Fossile Coccolithen mit rhagoidem Zentralfeld (Fam. Ahmuellerellaceae, Subord. Coccolithineae). Neues Jahrbuch für Geologie und Paläontologie, Monatshefte. 1967: 163-178. gs

Romein, A. J. T., Willems, H. & Mai, H. (1996). Calcareous nannoplankton of the Geulhemmerberg K/T boundary section, Maastrichtian type area, the Netherlands. Geologie en Mijnbouw. 75: 231-238. gs

Self-Trail, J. (1999). Some new and rarely documented Late Cretaceous calcareous nannofossils from subsurface sediments in South Carolina. Journal of Paleontology. 73(5): 952-963. gs

Stradner, H. (1963). New contributions to Mesozoic stratigraphy by means of nannofossils. Proceedings of the Sixth World Petroleum Congress. Section 1 Paper 4: 167-183. gs

Stradner, H., Aubry, M. -P. & Bonnemaison, M. (2010). Calcareous nannofossil type specimens in the collection of the Geological Survey of Austria: A taxonomic and stratigraphic update. Jahrbuch der Geologischen Bundesanstalt. 150(1-2): 9-84. gs V O

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

Verbeek, J. W. (1977). Calcareous nannoplankton biostratigraphy of Middle and Upper Cretaceous deposits in Tunisia, southern Spain and France. Utrecht Micropaleontological Bulletin. 16: 1-157. gs V O


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Gartnerago obliquum compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-10-2020

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