Pseudoemiliania lacunosa

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


Citation: Pseudoemiliania lacunosa Kamptner, 1963 ex Gartner, 1969
Rank: Species
Taxonomic discussion: This species was invalid when originally described by Kamptner (1963), since he assigned it to a provisional genus - Ellipsoplacolithus. It was subsequently validated by Gartner (1969), when he assigned it to his new genus Pseudoemiliania. For an extended explanation of this see van Heck (1990).

Distinguishing features: Circular to sub-circular with >12 slits, length >4µm

Farinacci & Howe catalog pages: E. lacunosus * , E. exsectus * , S. kamptneri *

Morphology: Coccoliths circular to sub-circular with >12 slits, length >4µm. Abundant in the Late Pliocene, but well-developed, large, circular forms only occur in the Pleistocene.

Search data:
TagsLITHS: placolith, circular, elliptical, CA: ca_conjunct, grill, vacant,
CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 4->7µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of NN19 zone (100% up, 0.4Ma, in Ionian stage). Data source: zonal marker, e.g. Young 1998
First occurrence (base): within NN15 zone (3.70-3.92Ma, base in Zanclean stage). Data source: Young 1998

Plot of occurrence data:


Bukry, D. (1971d). Coccolith stratigraphy, Leg 7 DSDP. Initial Reports of the Deep Sea Drilling Project. 7: 1513-1518. gs V O

Cohen, C. L. D. (1964). Coccolithophorids from two Caribbean deep-sea cores. Micropaleontology. 10(2): 231-250. gs

Gartner, S. (1969b). Correlation of Neogene planktonic foraminifera and calcareous nannofossil zones. Transactions of the Gulf-Coast Association of Geological Societies. 19: 585-599. gs

Kamptner, E. (1963). Coccolithineen-Skelettreste aus Tiefseeablagerungen des Pazifischen Ozeans. Annalen des Naturhistorischen Museums in Wien. 66: 139-204. gs V O

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

van Heck, S. E. (1990a). On the validity of Pseudoemiliania lacunosa Kamptner 1963 ex Gartner 1967. INA Newsletter. 12(2): 11-12. gs V O

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

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Short stable page link: Go to to create a permanent copy of this page - citation notes

Comments (1)

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Ines Galovic (CGS, Croatia)
In syn. you put in bracket (Coccolithus). Did you mean Coccolithites for Coccolithites annulus Cohen, 1964?
Jeremy Young (UCL, UK)
Thank you - you are quite correct and I have corrected the page now. Jeremy
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