Nannotax3 - ntax_mesozoic - Biscutum erismatum

Biscutum erismatum

Classification: ntax_mesozoic -> Podorhabdales -> Biscutaceae -> Biscutum -> Biscutum erismatum
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. depravatum, B. dorsetensis, B. dubium, B. erismatum, B. grande, B. intermedium, B. planum, B. profundum, B. sp.

GrunZweili80-pl01-04.JPG
Grun_and_Zweili-1980-06.JPG
Wise-1983-pl34-8.JPG
GrunZweili80-pl01-03.JPG
Kaenel Bergen 96 pl03 17.JPG
Kaenel Bergen 96 pl03 18-19.JPG
Wise & Wind 1977-DSDP36-pl78-4.JPG
Wise & Wind 1977-DSDP36-pl78-5.JPG
Wise & Wind 1977-DSDP36-pl78-6.JPG

Taxonomy:

Citation: Biscutum erismatum (Wind & Wise in Wise & Wind, 1977) Grün & Zweili 1980

Rank: Species

Basionym: Palaeopontosphaera erismata Wind & Wise in Wise & Wind, 1977

Farinacci & Howe catalog pages: P. erismata *

Search data:

Tags	LITHS: placolith, elliptical, CA: cross-axial, ca_disjunct, process, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Metrics	Lith size: 3->4µm; Data source notes: holotype +/- 0.5µm

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Oxfordian Stage (157.25-163.47Ma, top in Oxfordian stage). Data source: Wind & Wise in Wise & Wind, 1977 (original description)
First occurrence (base): within Oxfordian Stage (157.25-163.47Ma, base in Oxfordian stage). Data source: Wind & Wise in Wise & Wind, 1977 (original description)

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Biscutum erismatum, synonyms included - Biscutum erismatum; Palaeopontosphaera erismata;
See also space-time plot :: Samples map :: Parent: Biscutum

References:

de Kaenel, E. & Bergen, J. A. (1996). Mesozoic calcareous nannofossil biostratigraphy from sites 897, 899, and 901, Iberia Abyssal Plain: New biostratigraphic evidence. Proceedings of the Ocean Drilling Program, Scientific Results. 149: 27-59. gs V O

Grün, W. & Zweili, F. (1980). Das kalkige Nannoplankton der Dogger-Malm-Grenze im Berner Jura bei Liesberg (Schweiz). Jahrbuch der Geologischen Bundesanstalt. 123: 231-341. gs V O

Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs V O

Wise, S. W. (1983). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 481-550. gs V O