Nannotax3 - ntax_mesozoic - Reinhardtites anthophorus

Citation: Reinhardtites anthophorus (Deflandre, 1959) Perch-Nielsen, 1968

Basionym: Rhabdolithus anthophorus Deflandre, 1959

Synonyms:

Cretarhabdus? anthophorus (Deflandre) Bramlette and Martini, 1964,
Discolithus cryptochondrus Stover, 1966 (according to Verbeek 1977)
Zygodiscus elegans Gartner 1968 (according to e.g. Bown 2005) - the holotype pl10 f5 is a typical anthophorus specimen although many of the other specimens illustrated by Gartner 1968 are different and the name has been used with other meanings.

Taxonomic discussion: The type illustration of Deflandre (1959) is a side view showing a massive spine with a large flaring calyx. Bramlette & Martini (1964) essentially defined the species concept with good side and plan view micrographs. Sissingh (1977) further defined this with a detailed synonymy and succinct description: This species is characterized by moderately large openings surrounded by a wide plate-lining at both sides of the central bridge structure. The plate-lining often has a "blocky" or "pitted" microstructure. European workers have consistently applied this concept.

Hattner & Wise (1980) disputed this interpretation suggesting that the form illustrated by Bramlette & Martini (1964), Sissingh (1977) and other authors only had a moderate-size calyx and did not correspond to the holotype of Deflandre. They suggested the form conventionally known as R. anthophorus should be known as Z. elegans Gartner 1967 and that another form with large openings and massive spine should be known as Z. anthophorus. This scheme was followed by Wise 1983, but has not been widely adopted. It does seem likely that two species with large spines are present but R. anthophorus can have very large spines of the type drawn by Deflandre 1959, as show by the image of Wind & Wise 1977, so we follow the conventional taxonomy here. The Zeugrhadotus species with a lrge spine does not appear to have been formally described so it si refered to her as Zeugrhabdotus large spine.

Geological Range:
Last occurrence (top): within UC15d subzone (75.93-76.82Ma, top in Campanian stage). Data source: Burnett 1998
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Burnett 1998

References:

Bramlette, M. N. & Martini, E. (1964). The great change in calcareous nannoplankton fossils between the Maestrichtian and Danian. Micropaleontology. 10(2): 291-322. gs

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

Deflandre, G. (1959). Sur les nannofossiles calcaires et leur systématique. Revue de Micropaléontologie. 2: 127-152. gs

Gartner, S. (1968). Coccoliths and related calcareous nannofossils from Upper Cretaceous deposits of Texas and Arkansas. University of Kansas Paleontological Contributions, Articles. 48 (Protista 1): 1-56. 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

Kharajiany, S. O. A., Al-Qayim, B. A. & Wise, S. W. (2020). Calcareous nannofossil biostratigraphy of the Upper Cretaceous–Lower Paleocene sequence of the Deramazan section, Sulaimani area, Kurdistan region of NE Iraq. Journal of Nannoplankton Research. 30(1): 7-16. gs V O

Perch-Nielsen, K. (1968c). Der Feinbau und die Klassifikation der Coccolithen aus dem Maastrichtien von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 16: 1-96. gs

Sissingh, W. (1977). Biostratigraphy of Cretaceous calcareous nannoplankton. Geologie en Mijnbouw. 65(1): 37-65. gs

Stover, L. E. (1966). Cretaceous coccoliths and associated nannofossils from France and the Netherlands. Micropaleontology. 12(2): 133-167. 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 V O

Wind, F. H. & Wise, S. W. (1983). Correlation of upper Campanian-lower Maestrichtian calcareous nannofossil assemblages in drill and piston cores from the Falkland Plateau, southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 551-563. gs V 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 V 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 V O

Tags	LITHS: murolith, elliptical, CA: ca_disjunct, process, bar, CROSS-POLARS: rim-unicyclic, V-prominent,
Metrics	Lith size: 9->14µm; Data source notes: Bramlette & Martini 1964

Reinhardtites anthophorus

References:

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