Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the Farinacci & Howe Catalog of Calcareous Nannofossils. In other cases (e.g. non-calcifying haptophytes) the data is directly compiled on this site. The "Catalogue of Calcareous Nannofossils" was originally compiled by Prof A. Farinacci 1969-1989, since 2000 it has been updated and extended by Richard Howe - see The Farinacci and Howe Catalog - an Introduction.
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Umbilicosphaera arena [01239].pdf
Umbilicosphaera arena 010259.jpg
Umbilicosphaera arena 010260.jpg
Current identification:
Compiled data
Citation: Umbilicosphaera arena Hay & Towe 1962taxonomic rank: SpeciesLanguage: ENType sample (& lithostrat): Sample: field sample; From: Tuileries de Donzacq, Couches d D., Landes, France; Type age (chronostrat): Cuisian [Eocene]Standardised type level: 101_LOWER EOCENEType locality: FranceType repository: Urbana, Illinois University, Geologic CollectionsRepository Country: USAFarinacci catalog page (& compiler): 1239
Editors' Notes The images are not very satisfactory but these look more like Coccolithus than Umbilicosphaera - rim structure is more complex and shows more cycles of elements than Umbiicosphaera.
References:
Hay, W. W. & Towe, K. M. (1962a). Electron microscope examination of some coccoliths from Donzacq (France). Eclogae Geologicae Helvetiae. 55: 497-517. gsO
Umbilicosphaera arena: Catalog entry compiled by Anna Farinacci. Viewed: 10-12-2024