Nannotax3 - ntax_mesozoic - Lucianorhabdus arcuatus

Lucianorhabdus arcuatus


Classification: ntax_mesozoic -> Holococcoliths -> Common genera -> Lucianorhabdus -> Lucianorhabdus arcuatus
Sister taxa: L. cayeuxii, L. arcuatus, L. compactus, L. inflatus, L. maleformis, L. quadrifidus, L. salomonii ⟩⟨ L. boudagherfadeliae, L. tabernus, L. turris ⟩⟨ L. arborius, L. cubiterminalis, L. phlaskus, L. lageniformis, L. windii, L. sp.

Distinguishing features:
Parent taxon (Lucianorhabdus): Holococcoliths with a proximal plate of four blocks and tall, hollow spines, which are often ridged or pitted and may be bulbous or curved.
This taxon: Lucianorhabdus with abruptly-curved, ridged, process.  Hattner & Wise (1980) included these forms in their "L. cayeuxi plexus", on the grounds that intergrade with L. cayeuxi and have similar stratigraphic range. Burnett (1998) regards them as separate secies and records different ranges for them.


Taxonomy:

Citation: Lucianorhabdus arcuatus Forchheimer, 1972
Rank: Species

Farinacci & Howe catalog pages: L. arcuatus *

Distinguishing features:
Parent taxon (Lucianorhabdus): Holococcoliths with a proximal plate of four blocks and tall, hollow spines, which are often ridged or pitted and may be bulbous or curved.
This taxon: Lucianorhabdus with abruptly-curved, ridged, process.  Hattner & Wise (1980) included these forms in their "L. cayeuxi plexus", on the grounds that intergrade with L. cayeuxi and have similar stratigraphic range. Burnett (1998) regards them as separate secies and records different ranges for them.

Search data:
TagsLITHS: holococcolith, asymmetric, elliptical, rod-shaped, hollow, CA: ca_disjunct, process, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 10->20µm; Segments: 4->4;
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 base of UC16 zone (10% up, 75.5Ma, in Campanian stage). Data source: Burnett 1998, fig 6.5
First occurrence (base): in lower part of UC10 zone (20% up, 89.1Ma, in Coniacian stage). Data source: Burnett 1998, fig 6.4

Plot of occurrence data:

References:

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

Farhan, A. J., Burnett, J. A., Bown, P. R. & Lord, A. R. (1994). Holococcoliths from the Upper Cretaceous of Alabama and Mississippi (USA). Cahiers de Micropaléontologie. 9: 57-73. gs V O

Forchheimer, S. (1972). Scanning electron microscope studies of Cretaceous coccoliths from the Köpingsberg Borehole No. 1, SE Sweden. Sveriges Geologiska Undersökning, Series C. #668, 65: 1-141. gs

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

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


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Lucianorhabdus arcuatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-9-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10612 Go to Archive.is to create a permanent copy of this page - citation notes



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