Nannotax3 - ntax_mesozoic - Watznaueria reinhardtii

Distinguishing features: Watznaueria with wide central-area spanned by a slightly oblique, narrow transverse bar that broadens at both ends.

Citation: Watznaueria reinhardtii Rood et al., 1971

Basionym: Watznaueria reinhardti Rood et al., 1971

Synonyms: Ellipsagellosphaera reinhardti (Rood et al., 1971) Noël 1973

Taxonomic discussion: This form is probably an early growth phase of W. britannica, as suggested by Young & Bown (1991).

Distinguishing features: Watznaueria with wide central-area spanned by a slightly oblique, narrow transverse bar that broadens at both ends.

Geological Range:
Last occurrence (top): within Late Jurassic Epoch (145.01-163.47Ma, top in Tithonian stage). Data source: [PRB rough estimate]
First occurrence (base): within Late Jurassic Epoch (145.01-163.47Ma, base in Oxfordian stage). Data source: [PRB rough estimate]

References:

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

Medd, A. W. (1979). The Upper Jurassic coccoliths from the Haddenham and Gamlingay boreholes (Cambridgeshire, England). Eclogae Geologicae Helvetiae. 72: 19-109. gs V O

Noël, D. (1973). Nannofossiles calcaires de sédiments jurassiques finement laminés. Bulletin du Muséum National d'Histoire Naturelle. 75: 95-156. gs

Rood, A. P., Hay, W. W. & Barnard, T. (1971). Electron Microscope Studies of Oxford Clay Coccoliths. Eclogae Geologicae Helvetiae. 64: 245-272. 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

Young, J. R. & Bown, P. R. (1991). An ontogenetic sequence of coccoliths from the Late Jurassic Kimmeridge Clay of England. Palaeontology. 34: 843-850. gs V O

Tags	LITHS: placolith, elliptical, CA: ca_disjunct, bar, CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
Metrics	Lith size: 4->6µm; Data source notes: holotype +/- 1 µm

Watznaueria reinhardtii

References:

Comments (0)

Add Comment