CATALOG - Syracosphaera oneillii

Folder trail: ntax_Farinacci -> S -> Syracosphaera -> Syracosphaera oneillii
Folders this level: << < S. lamina de Kaenel and Villa, S. leptolepis, S. lohmanni, S. lunaria, S. marginaporata, S. maxima, S. mediterranea, S. mediterranea binodata, S. molischi, S. monechiae, S. nana, S. nodosa, S. noroiticus, S. octiforma, S. oculata, S. oneillii, S. operculata, S. orbiculus, S. ovata, S. pastillusa, S. pemmadiscus, S. pila, S. pirus, S. profunda, S. protrudens, S. pseudoexangularis, S. pulchra, S. pulchroides, S. quadricornu, S. quadriperforata, S. radiata> >>

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 compiled by Prof A. Farinacci 1969-1989 and updated by Richard Howe 2000-2016 - see also this page.
Taxa are sorted alphabetically for simple browsing, or you can use search boxes at the top & bottom of the page

Current identification/main database link: Syracosphaera? oneillii da Gama & Varol 2013

Compiled data

Citation: Syracosphaera? oneillii da Gama & Varol 2013
Rank: Species
Type locality: Mozambique Channel, W. Indian Ocean
Type age (chronostrat): Zone NN9, Late Miocene
Standardised type level: 123_UPPER MIOCENE
Type sample (& lithostrat): DSDP, Site 242-6-CC
Type specimens: Plate 1, figures 7-8, 11-12, 16, 20
Type repository: authors' collections
Repository Country: USA
Farinacci catalog page (& compiler): n/a
Current citation: Syracosphaera? oneillii da Gama & Varol 2013

Original Description
Diagnosis: Small elliptical coccolith consisting of a non-birefringent outer cycle and birefringent inner cycle.

Description: This elliptical coccolith is made up of two cycles of elements. The outer cycle is non-birefringent whilst the inner cycle is birefringent. No structure was observed in the central area. Examination under SEM is necessary to understand the true structure of this small species.

Etymology: In honour of the late Dr. Brian J. O'Neill, colleague, Shell international E&P, Houston, Texas, USA

Extra details from original publication
Remarks: An influx of this small species was recorded between NN7 and lower NN10 in all studied locations.

Occurrence: This species is restricted to Zones NN7-NN10 where it is in great abundance. Syracosphaera? oneillii is observed in sediments from the Philippines, Vietnam, Malaysia, Indonesia, the Gulf of Aden, West Africa, Brazil and Trinidad.


da Gama, R. O. B. P. & Varol, O. (2013). New Late Oligocene to Miocene Species. Journal of Nannoplankton Research. 33(1): 1-12. gs V O


Syracosphaera oneillii: Catalog entry compiled by Jeremy Young. Viewed: 5-8-2021

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