Taxonomy:
Distinguishing features: Broadly elliptical Chiphragmalithus.
Farinacci & Howe catalog pages: C. acanthodes *
Search data:Tags | LITHS: murolith, elliptical, hollow, CA: diagonal cross, CROSS-POLARS: rim-unicyclic, V-prominent, |
Metrics | Lith size: 7->15µm; Data source notes: lith size from OD & illustrated specimens |
Geological Range:
Last occurrence (top): within NP12 zone (50.50-53.70Ma, top in Ypresian stage). Data source: Perch-Nielsen 1985b
First occurrence (base): within NP12 zone (50.50-53.70Ma, base in Ypresian stage). Data source: Perch-Nielsen 1985
Plot of occurrence data:
Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs V O Bramlette, M. N. & Sullivan, F. R. (1961). Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology. 7(2): 129-188. gs Müller, C. (1974b). Calcareous nannoplankton, Leg 25 (Western Indian Ocean). Initial Reports of the Deep Sea Drilling Project. 25: 579-633. gs V O Musatov, V. A. (2017). A new species of the genus Chiphragmalithus from the Ypresian stage (early Eocene) in the northern part of the Caspian Depression (Russia). Journal of Nannoplankton Research. 37(1): 67-76. gs V O Perch-Nielsen, K. (1971c). Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3): 1-76. gs Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gsReferences:
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Chiphragmalithus acanthodes compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-4-2021
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