Biscutum melaniae


Classification: Mesozoic -> Podorhabdales -> Biscutaceae -> Biscutum -> Biscutum melaniae
Sister taxa: B. constans, B. ellipticum, B. coronum, B. dekaenelii, B. magnum, B. melaniae, B. arrogans, B. asymmetricum, B. boletum, B. dissimilis, B. zulloii, B. hattneri, B. notaculum, B. virginica, B. gaultensis, B. thurowii, B. davyi, B. depravatus, B. dorsetensis, B. dubium, B. erismatum, B. grande, B. intermedium, B. planum, B. profundum, B. sp.,

Distinguishing features: Medium to large (7-10 µm), broadly elliptical, with a wide dark shield and a small, highly birefringent closed central area


Taxonomy:

Citation: Biscutum melaniae (Górka, 1957) Reinhardt, 1969
Rank: Species
Basionym: Tremalithus melaniae Górka, 1957
Synonyms:

Farinacci & Howe catalog pages: Tremalithus melaniae * , Biscutum harrisonii * , Conococcolithus panis * , Coccolithus oregus *

Distinguishing features: Medium to large (7-10 µm), broadly elliptical, with a wide dark shield and a small, highly birefringent closed central area

Search data:
TagsLITHS: placolith, elliptical, CA: closed, V-UNITS: V-prominent, R-UNITS: R-prominent, DETAILS: ca_disjunct, rim-bicyclic,
MetricsLith size: 7->10µm;
Sources: illustrated specimens & original description of C. oregus
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: LAD is later in N Europe (UC9a) than in Indian Ocean (UC7) - Burnett 1998
Last occurrence (top): within Paleocene Epoch (55.96-66.04Ma, top in Thanetian stage). Data source: Burnett 1998
First occurrence (base): in upper part of UC7 zone (80% up, 93.1Ma, in Turonian stage). Data source: Burnett 1998, fig.6.3

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Biscutum melaniae, synonyms included - Biscutum harrisonii; Biscutum melaniae; Biscutum panis; Conococcolithus panis; Markalius panis;
  • space-time plot :: Samples map :: Parent: Biscutum

    References:

    Burnett, J. A. (1997c). New species and new combinations of Cretaceous nannofossils and a note on the origin of Petrarhabdus (Deflandre) Wise & Wind. Journal of Nannoplankton Research. 19(2): 133-146. gs :: view :: open

    Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs :: ::

    Edwards, A. R. & Perch-Nielsen, K. (1975). Calcareous nannofossils from the southern Southwest Pacific, Deep Sea Drilling Project, Leg 29. Initial Reports of the Deep Sea Drilling Project. 29: 469-539. gs :: view :: open

    Edwards, A. R. (1973). Key species of New Zealand calcareous nannofossils. New Zealand Journal of Geology and Geophysics. 16: 68-89. gs :: ::

    Górka, H. (1957). Les Coccolithophoridés du Maestrichtien supérieur de Pologne. Acta Palaeontologica Polonica. 2: 239-284. gs :: ::

    Jiang, M. -J. & Gartner, S. (1986). Calcareous nannofossil succession across the Cretaceous/Tertiary boundary in east-central Texas. Micropaleontology. 32(3): 232-255. gs :: ::

    Reinhardt, P. (1969). Neue Coccolithen-Arten aus der Kreide. Monatsberichte der Deutschen Akademie der Wissenschaften zu Berlin. 11: 932-938. gs :: ::

    Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. gs :: view :: open

    Varol, O. (1989c). Palaeocene calcareous nannofossil biostratigraphy. In, Crux, J. A. & van Heck, S. E. (eds) Nannofossils and their applications: Proceedings of the 2nd INA Conference, London 1987. British Micropalaeontological Society Publication Series. 265-310. gs :: ::


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    Biscutum melaniae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 7-8-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10087 Go to Archive.is to create a permanent copy of this page - citation notes



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