Retecapsa octofenestrata

Classification: Mesozoic -> Podorhabdales -> Cretarhabdaceae -> Retecapsa -> Retecapsa octofenestrata
Sister taxa: R. incompta, R. angustiforata, R. beckii, R. octofenestrata, R. schizobrachiata, R. crenulata, R. surirella, R. escaigii, R. ficula, R. sp.,

Distinguishing features: Cretarhabdids with axial cross & 1 lateral bar per quadrant; central area relatively narrow (<1/3 the shield width). All 8 holes of similar size..


Citation: Retecapsa octofenestrata (Bralower in Bralower et al., 1989) Bown in Bown & Cooper, 1998
Rank: Species
Basionym: Cretarhabdus octofenestratus Bralower in Bralower et al., 1989
Notes & discussion: The combination Retecapsa octofenestrata was also proposed by Bergen 1998, it is not clear which author has priority.

Farinacci & Howe catalog pages: Cretarhabdus octofenestratus * , Cretarhabdella bergenii * , Cretarhabdus multicavus *

Distinguishing features: Cretarhabdids with axial cross & 1 lateral bar per quadrant; central area relatively narrow (<1/3 the shield width). All 8 holes of similar size..

Search data:
TagsLITHS: placolith, elliptical, CA: cross-axial, grill, process, R-UNITS: R-prominent, DETAILS: ca_disjunct, rim-unicyclic,
MetricsLith size: 5->8µm;
Sources: 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): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Bralower et al. 1989;Bown & Cooper 1998
First occurrence (base): within Early Callovian Substage (164.63-166.07Ma, base in Callovian stage). Data source: Bralower et al. 1989;Bown & Cooper 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: Retecapsa octofenestrata, synonyms included - Cretarhabdus octofenestratus; Retecapsa octofenestrata;
  • space-time plot :: Samples map :: Parent: Retecapsa


    Bergen, J. A. (1998). Calcareous nannofossils from the lower Aptian historical stratotype at Cassis-La Bedoule (SE France). Géologie Méditerranéenne. 25(3-4): 227-255. gs :: ::

    Bown, P. R. & Concheyro, A. (2004). Lower Cretaceous calcareous nannoplankton from the Neuquen Basin, Argentina. In, Villa, G. , Lees, J. A. & Bown, P. R. (eds) Calcareous Nannofossil Palaeoecology and Palaeocenographic Reconstructions, Proceedings of the INA9 conference, Parma 2002. Marine Micropaleontology. 52(1-4): 51-84. gs :: ::

    Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs :: ::

    Bown, P. R. (2005). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-82. gs :: view :: open

    Bralower, T. J. & Bergen, J. A. (1998). Cenomanian-Santonian calcareous nannofossil biostratigraphy of a transect of cores drilled across the Western Interior Seaway. In, Dean, W. E. & Arthur, M. A. (eds) Stratigraphy and paleoenvironments of the Cretaceous Western Interior Seaway. SEPM Concepts in Sedimentology and Paleontology. -. gs :: ::

    Bralower, T. J., Monechi, S. & Thierstein, H. R. (1989). Calcareous nannofossil zonation of the Jurassic-Cretaceous boundary interval and correlation with the geomagnetic polarity timescale. Marine Micropaleontology. 14: 153-235. gs :: ::

    Grün, W. & Allemann, F. (1975). The Lower Cretaceous of Caravaca (Spain): Berriasian Calcareous Nannoplankton of the Miravetes Section (Subbetic Zone, Prov. of Murcia). Eclogae Geologicae Helvetiae. 68: 147-211. gs :: view :: open

    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 :: view :: open


    Retecapsa octofenestrata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 5-7-2020

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