Distinguishing features: Unicyclic, large; bar divided longitudinally; very wide rim/very small openings
Taxonomy:
Farinacci & Howe catalog pages: Z. biperforatus *
Distinguishing features: Unicyclic, large; bar divided longitudinally; very wide rim/very small openings
Search data:Tags | LITHS: murolith, ca_disjunct, process, bar, CROSS-POLARS: rim-unicyclic, V-prominent, |
Metrics | Lith size: 8->10µm; Data source notes: illustrated specimens |
Geological Range:
Last occurrence (top): within UC15d subzone (75.93-76.82Ma, top in Campanian stage). Data source: Burnett 1998
First occurrence (base): at base of UC9b subzone (0% up, 90.7Ma, in Turonian stage). Data source: Burnett 1998 (subzonal marker), fig.6.3
Plot of occurrence data:
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 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. (1997c). New species and new combinations of Cretaceous nannofossils and a note on the origin of Petrarhabdus (Deflandre) Wise & Wind. Journal of Nannoplankton Research. 19(2): 133-146. 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 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 Lees, J. A. & Bown, P. R. (2005). Upper Cretaceous calcareous nannofossil biostratigraphy, ODP Leg 198 (Shatsky Rise, Northwest Pacific Ocean). Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-60. gs V O Lees, J. A. (2007). New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research. 29(1): 39-65. gs V O Shafik,S. (1979). Validation of Chiastozygus fessus and Reinhardtites biperforatus. INA Newsletter. 1(2): C5-5. gs V OReferences:
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Zeugrhabdotus biperforatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 27-1-2021
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