Parhabdolithus robustus


Classification: Mesozoic -> Stephanolithiales -> Parhabdolithaceae -> Parhabdolithus -> Parhabdolithus robustus
Sister taxa: P. liasicus, P. marthae, P. robustus, P. stubbingsii, P. sp.,

Distinguishing features: Parhabdolithus with broad, parallel-sided, bluntly terminated spine. Spine usually terminates just above the rim, and does not exceed twice the rim height.


Taxonomy:

Citation: Parhabdolithus robustus Noël, 1965
Rank: Species
Synonyms: Parhabdolithus zweilii Crux 1987 [cf. Neptune database synonymy]

Farinacci & Howe catalog pages: Parhabdolithus robustus * , Parhabdolithus zweilii + *

Distinguishing features: Parhabdolithus with broad, parallel-sided, bluntly terminated spine. Spine usually terminates just above the rim, and does not exceed twice the rim height.

Geological Range:
Last occurrence (top): at top of NJ4a subzone (100% up, 189.1Ma, in Pliensbachian stage). Data source: Bown & Cooper 1998 (fig 4) - zonal event; Mattioli & Erba 1999 (top NJT4a, slightly later)
First occurrence (base): in lower part of NJ2b subzone (20% up, 195.9Ma, in Sinemurian stage). Data source: Bown & Cooper 1998 (fig. 4) - secondary events

Plot of occurrence data:

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

    References:

    Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs

    Bown, P. R. (1987a). Taxonomy, evolution, and biostratigraphy of Late Triassic-Early Jurassic calcareous nannofossils. Special Papers in Palaeontology. 38: 118-. gs

    Bown, P. R. (1987b). The structural development of Early Mesozoic coccoliths and its evolutionary and taxonomic significance. Abhandlungen der Geologischen Bundesanstalt. 39: 33-49. gs

    Bown, P. R., Cooper, M. K. E. & Lord, A. R. (1988). A calcareous nannofossil biozonation scheme for the early to mid Mesozoic. Newsletters on Stratigraphy. 20: 91-114. gs

    Crux, J. A. (1987b). Early Jurassic calcareous nannofossil biostratigraphic events. Newsletters on Stratigraphy. 17: 79-100. gs

    Mattioli, E. & Erba, E. (1999). Synthesis of calcareous nannofossil events in Tethyan lower and middle Jurassic successions. Rivista Italiana di Paleontologia e Stratigrafia. 105(3): 343-376. gs

    Noël, D. (1965). Sur les Coccolithes du Jurassique Européen et d'Afrique du Nord. Éditions du Centre National de la Recherche Scientifique, Paris. -. gs

    Prins, B. (1969). Evolution and stratigraphy of cocolithinids from the Lower and Middle Lias. In, Bronnimann, P. & Renz, H. H. (eds) Proceedings of the First International conference on Planktonic Microfossils, Geneva 1967. E. J. Brill, Leiden 547-558. gs


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    Parhabdolithus robustus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-9-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10861 Go to Archive.is to create a permanent copy of this page - citation notes



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