Nannotax3 - ntax_cenozoic - Discoaster cruciformis

Discoaster cruciformis

Classification: ntax_cenozoic -> Discoasterales -> Discoasteraceae -> Discoaster -> D. nodifer group -> Discoaster cruciformis
Sister taxa: D. cruciformis, D. colletii, D. gemmifer, D. mediosus, D. binodosus, D. nodifer, D. distinctus, D. septemradiatus, D. tanii, D. tani ornatus, D. istanbulensis, D. martinii, D. williamsii, D. backmanii, D. okadai

BramlSull61pl11-05.JPG
CalcPal-dcru_sem.jpg
PN72 pl13-03.JPG
Shepherd-JNR2016-pl7-11.JPG
Shepherd-JNR2016-pl7-12.JPG

Taxonomy:

Citation: Discoaster cruciformis Martini 1958

Rank: Species

Distinguishing features: 4-rayed, symetric, ray tips curved downwards

Farinacci & Howe catalog pages: D. cruciformis *

Search data:

Tags	LITHS: nannolith-radiate, star-shaped, CROSS-POLARS: 1ou, V-prominent,
Metrics	Lith size: 5->13µm; Segments: 4->4; Data source notes: size from OD

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

Geological Range:
Last occurrence (top): within NP14 zone (46.29-49.11Ma, top in Lutetian stage). Data source: Perch-Nielsen 1985
First occurrence (base): within NP12 zone (50.50-53.70Ma, base in Ypresian stage). Data source: Perch-Nielsen 1985

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: Discoaster cruciformis, synonyms included - Discoaster cruciformis;
See also space-time plot :: Samples map :: Parent: D. nodifer group

References:

Bramlette, M. N. & Sullivan, F. R. (1961). Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology. 7(2): 129-188. gs

Martini, E. (1958). Discoasteriden und verwandte Formen im NW-deutschen Eozän (Coccolithophorida). 1. Taxonomische Untersuchungen. Senckenbergiana Lethaea. 39: 353-388. gs

Perch-Nielsen, K. (1972b). Remarks on Late Cretaceous to Pleistocene coccoliths from the North Atlantic. Initial Reports of the Deep Sea Drilling Project. 12: 1003-1069. gs V O

Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

Shepherd, C. L. & Kulhanek, D. K. (2016). Eocene nannofossil biostratigraphy of the mid-Waipara River section, Canterbury Basin, New Zealand. Journal of Nannoplankton Research. 26(1): 33-59. gs V O

Discoaster cruciformis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=462 Go to Archive.is to create a permanent copy of this page - citation notes

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