Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the 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 also this page.
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Citation: Aspidorhabdus ovalis Hay & Towe 1962Rank: SpeciesType locality: FranceType age (chronostrat): Cuisian [Eocene]Standardised type level: 101_LOWER EOCENEType sample (& lithostrat): Sample: field sample; From: Tuileries de Donzacq, Couches d D., Landes, France; Type repository: Urbana, Illinois University, Geologic CollectionsRepository Country: USAFarinacci catalog page (& compiler): 1002Language: ENCurrent citation: Blackites sp.
Editors' Notes this clearly a Rhabdosphaerid base, with the spine broken off. However, it is difficult to classify further since the rim lacks the rail lath cycle which suggests Rhabdosphaera whilst the wide spinebase suggests Blackites. It possibly is evidence that some species currently included in Blackites do not have the archetypal baseplate structure.
Hay, W. W. & Towe, K. M. (1962a). Electron microscope examination of some coccoliths from Donzacq (France). Eclogae Geologicae Helvetiae. 55: 497-517. gsVO
Aspidorhabdus ovalis: Catalog entry compiled by Anna Farinacci. Viewed: 24-10-2021