Lithostromationaceae


Ancestry: Coccolithophores -> Nannolith families inc sed -> Lithostromationaceae
Sister taxa: Ceratolithaceae, Lapideacassaceae, Lithostromationaceae, Nannolith genera inc sed, Rhomboasteraceae,

Short diagnosis: Large (10-20µm) triangular to stellate nannoliths with porous structure formed from small crystallites. In xpl behave as single crystal unit with low birefringence


Daughter taxa (blue => in age window 0-300Ma) Granddaughter taxa
Nannolith formed of 6 rays in two superposed offset triplets





Large (10-20µm) triangular to stellate nannoliths with porous structure formed from small crystallites.

12-rayed platelets

Taxonomy:

Citation: Lithostromationaceae Deflandre, 1959
Rank: Family

Farinacci & Howe catalog pages:

Short diagnosis: Large (10-20µm) triangular to stellate nannoliths with porous structure formed from small crystallites. In xpl behave as single crystal unit with low birefringence


Morphology remarks: Crystallography - probbly the same as discoasters, i.e formed entirely of V-units. The nannoliths are thick anf often slightly tiltedso show some birefringence [my interpretation - JRY 2017]

Ecology & Biogeography: Typically confined to epicontinental areas.

Geological Range:
Last occurrence (top): within Ionian Stage (0.13-0.78Ma, top in Ionian stage). Data source: Total of range of species in this database
First occurrence (base): within Danian Stage (61.61-66.04Ma, base in Danian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

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

Perch-Nielsen, K., (1985). Cenozoic calcareous nannofossils. In: Bolli, H.M., Saunders, J.B. and Perch-Nielsen, K. (Editors), Plankton Stratigraphy. Cambridge University Press, Cambridge, pp. 427-555.


Nannotax3 - Coccolithophores - Lithostromationaceae by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-6-2017

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