Nannotax3 - ntax_cenozoic - Lithostromationaceae Nannotax3 - ntax_cenozoic - Lithostromationaceae

Lithostromationaceae


Classification: ntax_cenozoic -> Nannolith families inc sed -> Lithostromationaceae
Sister taxa: Ceratolithaceae, Lapideacassaceae, Lithostromationaceae, Nannolith genera inc sed, Rhomboasteraceae

Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa
Lithostromation
Triangular to stellate nannoliths with porous structure formed from small crystallites.

Imperiaster
Very large (15-30 µm) nannolith formed of 6 rays in two superposed offset triplets

Martiniaster
Disk-shaped with 10-12 radiate ridges
Martiniaster cecellanoriae
Martiniaster fragilis
Martiniaster menneri

Isolithus
Simple triradiate nannolith
Isolithus semenenkoi

Taxonomy:

Citation: Lithostromationaceae Deflandre, 1959
taxonomic rank: Family
Taxonomic discussion: The genera Isolithus and Lacunolithus described by Lyul'eva 1967 were included by Young & Bown 1997 in the Lithostromationaceae since they have similar morphology and neritic distribution to the better known genera.  Alternativley they might be regared as junior synonyms of Lithostromation. [my interpretation - JRY 2021]

Distinguishing features:
Parent taxon (Nannolith families inc sed): Haptophytes forming calcareous structures not obviously homologous with heterococcoliths, holococcoliths, or discoasteralids
This taxon: Large (10-20µm) triangular to stellate nannoliths with porous structure formed from small crystallites. In xpl behave as single crystal unit with low birefringence

Farinacci & Howe catalog pages: Lithostromationaceae [no catalog entry yet]


Morphology:

Crystallography - probably the same as discoasters, i.e formed entirely of V-units. The nannoliths are thick and often slightly tilted so show some birefringence [my interpretation - JRY 2017]


Ecology & Biogeography

Typically confined to epicontinental areas.

Search data:
Lith size: 2->30µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of NN19 zone (100% up, 0.4Ma, in Ionian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Early Eocene Sub-Epoch (47.84-55.96Ma, base in Ypresian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Deflandre, G. (1959). Sur les nannofossiles calcaires et leur systématique. Revue de Micropaléontologie. 2: 127-152. gs

Lyul'eva, S. A. (1967). Coccolithophoridae in the Turonian strata of the Dneiper-Don Basins. Geologicheskiy Zhurnal. 27: 91-98. gs

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

Young, J. R. & Bown, P. R. (1997). Cenozoic calcareous nannoplankton classification. Journal of Nannoplankton Research. 19(1): 36-47. gs


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Lithostromationaceae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-12-2023

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=828 Go to Archive.is to create a permanent copy of this page - citation notes
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