Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
| Pseudoemiliania lacunosa Circular to sub-circular with >12 slits, length >4µm | ||||
| Pseudoemiliania ovata Elliptical and with <12 slits in the distal shield | ||||
| Pseudoemiliania sp. Specimens which cannot be assigned to established species | ||||
| species | number of slits | coccolith length | outline |
| Pseudoemiliania lacunosa var. lacunosa | >12 | 4-10 µm | circular to sub-circular |
| Pseudoemiliania pacifica | 5-12 | >6.5 µm | elliptical |
| Pseudoemiliania lacunosa var. ovata | 5-12 | 4-6.5 µm | elliptical |
| Crenalithus asanoi | 0-4 | >6.5 µm | elliptical |
| Crenalithus japonicus | 0-4 | 5-6.5 µm | elliptical |
| Crenalithus doronicoides | 0-4 | 3-5 µm | elliptical |
| Crenalithus sessilis | 0-4 | elliptical |
Distinguishing features:
Parent taxon (Noelaerhabdaceae): Heterococcoliths with Reticulofenestra-type structure, V-units vestigal, R-units forming grill, both shields, and two-layered tube
This taxon: With slits between some of the distal shield elements
Farinacci & Howe catalog pages:
Pseudoemiliania * , Ellipsoplacolithus * , Salisia * , Vonsalisia
Most likely ancestor:
Reticulofenestra - at confidence level 3 (out of 5). Data source: e.g. Young 1990.
| LITHS: placolith, circular, elliptical, CA: ca_conjunct, grill, vacant, CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent, |
| Lith size: 3->7µm; |
Geological Range:
Last occurrence (top): at top of NN19 zone (100% up, 0.4Ma, in Ionian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within NN14 zone (3.92-4.13Ma, base in Zanclean stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
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 Matsuoka, H. & Okada, H. (1989). Quantitative analysis of Quaternary nannoplankton in the subtropical Northwestern Pacific Ocean. Marine Micropaleontology. 14: 97-118. 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 Varol, O. (2019). Vonsalisia Varol nom nov pro Salisia Varol 2004 non Lindley 1839. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 291(2): 229-230. gs Young, J. R. (1990). Size variation of Neogene Reticulofenestra coccoliths from Indian Ocean DSDP cores. Journal of Micropalaeontology. 9: 71-86. gs Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 225-265. gs References:

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Pseudoemiliania compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 12-6-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1126 Go to Archive.is to create a permanent copy of this page - citation notes |
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