Nannotax3 - ntax_cenozoic - Chiphragmalithus armatus

Citation: Chiphragmalithus armatus Perch-Nielsen, 1971

Distinguishing features: Narrowly elliptical Chiphragmalithus. Bars clearly higher then the rim.

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

References:

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. gs

Shamrock, J. L. & Watkins, D. K. (2012). Eocene calcareous nannofossil biostratigraphy and community structure from Exmouth Plateau, Eastern Indian Ocean (ODP Site 762). Stratigraphy. 9(1): 1-11. gs

Varol, O. (1998). Palaeogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 200-224. gs

Tags	LITHS: murolith, elliptical, CA: diagonal cross, CROSS-POLARS: rim-unicyclic, V-prominent,
Metrics	Lith size: 8->12µm; Data source notes: lith size from illustrated specimens

Chiphragmalithus armatus

References:

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