Pseudoemiliania ovata

Classification: ntax_cenozoic -> Isochrysidales -> Noelaerhabdaceae -> Pseudoemiliania -> Pseudoemiliania ovata
Sister taxa: P. lacunosa, P. ovata, P. sp.


Citation: Pseudoemiliania ovata (Bukry, 1973) Young 1998
Rank: Species
Basionym: Emiliania ovata Bukry, 1973
Taxonomic discussion: P. ovata and P. lacunosa intergrade and many workers do not distinguish them. See Young (1990) for extended discussion of the relationship between lacunosa and ovata. There is continuous variation within the group and if it is thought useful to subdivide them further then it would probably be most practical to simply do this by using size /shape classes without assigning names - as has been done by for instance Matsuoka & Okada (1989).

Distinguishing features: Elliptical and with <12 slits in the distal shield

Farinacci & Howe catalog pages: E. ovata * , R. pacifica * , S. gartneri *

Morphology: Coccoliths similar to P. lacunosa but elliptical and with <12 slits in the distal shield.

Search data:
TagsLITHS: placolith, elliptical, CA: ca_conjunct, grill, vacant,
CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 3->6µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: Very abundant in Late Pliocene
Last occurrence (top): within NN19 zone (0.44-1.93Ma, top in Ionian stage). Data source: Young 1998
First occurrence (base): within NN14 zone (3.92-4.13Ma, base in Zanclean stage). Data source: Young 1998

Plot of occurrence data:


Bukry, D. (1973c). Coccolith stratigraphy, eastern equatorial Pacific, Leg 16, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 16: 653-711. gs V O

Lourens, L. J., Hilgen, F. J., Shackleton, N. J., Laskar, J. & Wilson, D. (2004). The Neogene Perion. In, Gradstein, F. M., Ogg, J. G. & Smith, A. (eds) A Geologic Time Scale. Cambridge University Press, Cambridge 409-440. gs

Matsuoka, H. & Okada, H. (1989). Quantitative analysis of Quaternary nannoplankton in the subtropical Northwestern Pacific Ocean. Marine Micropaleontology. 14: 97-118. gs

Nishida, S. (1979). Atlas of Pacific Nannoplanktons. News of Osaka Micropaleontologists, Special Paper. 3: 1-31. gs

Varol, O. (2004). Salisia n.g. – a new Pliocene-Pleistocene coccolith genus. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte. 2004(2): 119-128. gs

Young, J. R. (1990). Size variation of Neogene Reticulofenestra coccoliths from Indian Ocean DSDP cores. Journal of Micropalaeontology. 9: 71-86. gs V O

Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 225-265. gs V O


Pseudoemiliania ovata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 7-3-2021

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