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..
TypeFig Retecapsa octofenestrata.jpg
Bralower et al 1989 pl3 01-3.jpg
Wise-1983-pl27-2.JPG
BownCooper1998 4-13-23.jpg
Bown2005-ODP198 Pl08-10.jpg
Bralower et al 1989 pl3 06 .jpg
Grun_and_Allemann_1975-16.JPG
TypeFig Retecapsa octofenestrata 2.jpg
Bown & Concheyro-2004_2-24.jpg
Bown2005-ODP198 Pl08-09.jpg
Bralower & Bergen 1998 pl1 03.jpg
Bralower et al 1989 pl3 04-5.jpgTaxonomy:
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:| Tags | LITHS: placolith, elliptical, CA: cross-axial, grill, process, R-UNITS: R-prominent, DETAILS: ca_disjunct, rim-unicyclic, |
| Metrics | Lith size: 5->8µm; Sources: original description & illustrated specimens |
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:
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 :: openReferences:
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Retecapsa octofenestrata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 5-7-2020
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