Nannotax3 - ntax_mesozoic - Ahmuellerella octoradiata

Ahmuellerella octoradiata


Classification: ntax_mesozoic -> Eiffellithales -> Chiastozygaceae -> Ahmuellerella -> Ahmuellerella octoradiata
Sister taxa: A. alboradiata, A. frankiae, A. octoradiata, A. regularis, A. sp.

Distinguishing features:
Parent taxon (Ahmuellerella): Muroliths with complex axial cross structure or plate, typically incorporating 8 near-axial or radial bars or suture lines.
This taxon: Muroliths with narrow rim and central area plate-like structure incorporating 8 near-axial bars.


Taxonomy:

Citation: Ahmuellerella octoradiata (Górka, 1957) Reinhardt, 1966
Rank: Species
Basionym: Discolithus octoradiatus Górka, 1957
Synonyms:

Farinacci & Howe catalog pages: D. octoradiatus * , A. limbitenuis *

Distinguishing features:
Parent taxon (Ahmuellerella): Muroliths with complex axial cross structure or plate, typically incorporating 8 near-axial or radial bars or suture lines.
This taxon: Muroliths with narrow rim and central area plate-like structure incorporating 8 near-axial bars.


Morphology:


Size:

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, plate, process, CROSS-POLARS: rim-unicyclic, V-prominent,
MetricsLith size: 6->9µm;
Data source notes: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): near top of UC20a subzone (90% up, 69Ma, in Maastrichtian stage). Data source: Burnett 1998, fig 6.6
First occurrence (base): in upper part of UC5b subzone (70% up, 94.1Ma, 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 O

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

Górka, H. (1957). Les Coccolithophoridés du Maestrichtien supérieur de Pologne. Acta Palaeontologica Polonica. 2: 239-284. gs V O

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

Pospichal, J. J. & Wise, S. W. (1990b). Maestrichtian calcareous nannofossil biostratigraphy of Maud Rise ODP leg 113 sites 689 and 690, Weddell Sea. Proceedings of the Ocean Drilling Program, Scientific Results. 113: 465-487. gs V O

Püttmann, T. & Mutterlose, J. (2019). Calcareous nannofossils from a Late Cretaceous nearshore setting. Journal of Nannoplankton Research. S4: 81-88. gs V O

Püttmann, T., Linnert, C., Dölling, B. & Mutterlose, J. (2018). Deciphering Late Cretaceous (Cenomanian to Campanian) coastline dynamics in the southwestern Münsterland (northwest Germany) by using calcareous nannofossils: Eustasy vs local tectonics,. Cretaceous Research. 87: 174-184. gs

Reinhardt, P. & Górka, H. (1967). Revision of some Upper Cretaceous Coccoliths from Poland and Germany. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 129(3): 240-256. gs

Reinhardt, P. (1964). Einige Kalkflagellaten-Gattungen (Coccolithophoriden, Coccolithineen) aus dem Mesozoikum Deutschlands. Monatsberichte der Deutschen Akademie der Wissenschaften zu Berlin. 6: 749-759. gs V O

Reinhardt, P. (1966b). Zur Taxonomie und Biostratigraphie des fossilen Nannoplanktons aus dem Malm, der Kreide und dem Alttertiär Mitteleuropas. Freiberger Forschungshefte. C196: 5-109. 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

Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. 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 O

Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs O

Wise, S. W. (1983). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 481-550. gs O


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Ahmuellerella octoradiata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-7-2022

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