Holodiscolithus solidus


Classification: ntax_cenozoic -> Holococcoliths -> fossil holococcoliths -> Holodiscolithus -> Holodiscolithus solidus
Sister taxa: H. agniniae, H. catellus, H. geisenii, H. lippertii, H. liui, H. macroporus, H. minolettii, H. serus, H. solidus, H. whitesideae, H. sp.

Taxonomy:

Citation: Holodiscolithus solidus (Deflandre in Deflandre & Fert, 1954) Roth, 1970
Rank: Species
Basionym: Discolithus solidus Deflandre in Deflandre & Fert, 1954
Taxonomic discussion: Some specimens resemble Holodiscolithus macroporus, having six circular perforations rather than holes delineated by distinct bars

Distinguishing features: Cavate elliptical holococcolith; bars define 6 holes - 2 at ends and 4 at sides

Farinacci & Howe catalog pages: D. solidus *


Morphology: Elliptical holococcoliths comprising a rim and six central area bars that are typically weakly- or non-birefringent. The bars merge centrally to form an elongate structure that bifurcates at either end and is crossed by a transverse bar. In side view, the cavate structure of the holococcolith is evident, along with the rim, proximal plate, distal cover and bar structures.

Search data:
TagsLITHS: holococcolith, elliptical, CA: pores, CROSS-POLARS: V-prominent, R-prominent,
MetricsLith size: 4->6µm;
Data source notes: lith size from illustrated specs
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP23 zone (29.62-32.02Ma, top in Rupelian stage). Data source: Dunkley Jones et al., 2009
First occurrence (base): within NP4 zone (61.51-63.25Ma, base in Danian stage). Data source: [PRB rough estimate]

Plot of occurrence data:

References:

Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs V O

Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs V O

Bown, P. R. (2010). Calcareous nannofossils from the Paleocene/Eocene Thermal Maximum interval of southern Tanzania (TDP Site 14). Journal of Nannoplankton Research. 31(1): 11-38. gs V O

Bown, P. R. (2016). Paleocene calcareous nannofossils from Tanzania (TDP sites 19, 27 and 38). Journal of Nannoplankton Research. 36(1): 1-32. gs V O

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

Bybell, L. & Self-Trail, J. (1997). Late Paleocene and Early Eocene calcareous nannofossils from three boreholes in an onshore-offshore transect from New Jersey to the Atlantic continental rise. Proceedings of the Ocean Drilling Program, Scientific Results. 150: 91-110. gs V O

Bybell, L. (1975). Middle Eocene calcareous nannofossils at Little Stave Creek, Alabama. Tulane Studies in Geology and Paleontology. 11(4): 177-247. gs V O

Deflandre, G. & Fert, C. (1954). Observations sur les coccolithophoridés actuels et fossiles en microscopie ordinaire et électronique. Annales de Paléontologie. 40: 115-176. gs

Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs

Roth, P. H. (1970). Oligocene calcareous nannoplankton biostratigraphy. Eclogae Geologicae Helvetiae. 63: 799-881. gs V O


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

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=724 Go to Archive.is to create a permanent copy of this page - citation notes



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