Nannotax3 - ntax_Farinacci - Calcidiscus salomonii Nannotax3 - ntax_Farinacci - Calcidiscus salomonii

CATALOG - Calcidiscus salomonii


Folder trail: ntax_Farinacci -> C -> Calcidiscus -> Calcidiscus salomonii
Folders this level: C. bicircus, C. edgariae, C. ellipticus, C. gallagheri, C. gerrardii, C. henrikseniae, C. kamikurii, C. medusoides, C. nodosus, C. obscurus, C. odebodea, C. parvicrucis, C. parvus, C. premacintyrei, C. quadriforatus, C. randeus, C. salamis, C. salomonii, C. scullyae, C. uniforatus

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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Current identification/main database link: Calcidiscus salomonii da Gama & Varol 2013

Compiled data

Citation: Calcidiscus salomonii da Gama & Varol 2013
Taxonomic rank: species
Language: EN
Described on page(s) : 3
Type specimens: Plate 2, figures 13-20
Type sample (& lithostrat): Field Sample 458, Hatay, Southern Turkey
Type age (chronostrat): NN6
Standardised type level: 122_MIDDLE MIOCENE
Type locality: Hatay, Southern Turkey
Type repository: authors collection
Repository Country: USA
Farinacci catalog page (& compiler): n/a
Current citation: Calcidiscus salomonii da Gama & Varol 2013


Original Description

Diagnosis: Small, strictly circular Calcidiscus whose diameter of the central opening is always greater than the width of the shields.

Description: This small species (3-6μm) has a non-birefringent distal shield, a tube cycle and a birefringent monocyclic proximal shield. The diameter of the central area is always greater than the width of the shield.

Size:
holotype: Maximum diameter: 5.6μm Diameter of the central area: 1.6μm Diameter of the central area in polarised light: 3.6μm Width of the proximal shield: 1.6μm

Etymology:
In honour of the late Ralph Salomon, nannofossil specialist and very good friend.

Extra details from original publication
Remarks: Calcidiscus salomonii is distinguished from Calcidiscus tanianus by being much smaller and having a central opening always greater than the width of the shields. In C. tanianus, the central opening is smaller than the width of the shield. Calcidiscus tropicus (Syn. Calcidiscus macintyrei) is similar to C. tanianus but larger (>10μm). C. salomonii differs from Calcidiscus leptoporus by having a central opening, the latter has a closed central area. Some specimens, under polarised light, can artificially resemble Reticulofenestra rotaria, however C. salomonii is non-birefringent, whereas in R. rotaria the distal shield is birefringent. In addition, the Calcidiscus type structure is readily observed under phase contrast in C. salomonii.

Occurrence: C. salomonii is recorded from middle-upper Miocene sediments (Zone NN6 to NN11). It is reported in samples from Turkey, the Indian Ocean, the Gulf of Aden, Nigeria, Angola and offshore Vietnam.

References:

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

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Calcidiscus salomonii: Catalog entry compiled by Jeremy Young. Viewed: 8-2-2026

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