Palaeomicula maltica

Classification: Mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Palaeomicula -> Palaeomicula maltica
Sister taxa: P. jacovidesii, P. maltica, P. quadrisphena,

Distinguishing features: Almost square, sutures run to corners of nannolith, elements wedge-shaped and outline notched


Citation: Palaeomicula maltica (Worsley 1971) Varol & Jakubowski 1989
Rank: Species
Basionym: Tetralithus malticus Worsley 1971

Farinacci & Howe catalog pages: Tetralithus malticus *

Distinguishing features: Almost square, sutures run to corners of nannolith, elements wedge-shaped and outline notched

Morphology remarks: In side view lozenge shaped and formed of two-layers - see mobile mount images of Varol & Bowman (2019)

Search data:
TagsLITHS: nannolith-radiate, quadrate, CA: closed, T-UNITS: T-prominent,
MetricsLith size: 3->5µm; Segments: 4->4;
Sources: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Hauterivian Stage (130.77-133.88Ma, top in Hauterivian stage). Data source: Varol & Jakubowski 1989
First occurrence (base): within Kimmeridgian Stage (152.06-157.25Ma, base in Kimmeridgian stage). Data source: Varol & Jakubowski 1989

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Palaeomicula


    Varol, O. & Bowman, A. R. (2019). Taxonomic revision of selected Late Jurassic (Tithonian) calcareous nannofossils and the application of mobile mounting. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen. 291: 65-87. gs :: ::

    Varol, O. & Jakubowski, M. (1989). Some new nannofossil taxa. INA Newsletter. 11: 24-29. gs :: view :: open

    Varol, O. (1992b). Taxonomic revision of the Polycyclolithaceae and its contribution to Cretaceous biostratigraphy. Newsletters on Stratigraphy. 27(93-127): -. gs :: ::

    Worsley, T. R. (1971). Calcareous nannofossil zonation of Upper Jurassic and Lower Cretaceous sediments from the Western Atlantic. In, Farinacci, A. (ed.) Proceedings of the Second Planktonic Conference Roma 1970. Edizioni Tecnoscienza, Rome 2: 1301-1321. gs :: ::


    Palaeomicula maltica compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 2-6-2020

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

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