CATALOG - Cruciplacolithus kanungoi


Folder trail: Farinacci -> C -> Cruciplacolithus -> Cruciplacolithus kanungoi
Folders this level: C. asymmetricus, C. bornemannii, C. cassus, C. cretaceus, C. edwardsii, C. filigranus, C. flavius, C. furtivus, C. hayi, C. inseadus, C. intermedius, C. kanungoi, C. klausii, C. latipons, C. mutatus, C. nebulosus, C. nishii, C. notus, C. opacus, C. pinnatus, C. praebornemannii, C. primus, C. quader, C. salebrosus, C. subrotundus, C. tarquinius, C. tenuiforatus, C. vanheckae, C. zachosii,

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.
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Current identification/main database link: Cruciplacolithus kanungoi da Gama & Varol 2013

Compiled data

Citation: Cruciplacolithus kanungoi da Gama & Varol 2012
Rank: Species
Type locality: Mozambique Channel, W. Indian Ocean
Type level: NN9
Standardised type level: 123_UPPER MIOCENE
Type sample: DSDP, Site 242-6-CC
Type specimens: Plate 2, figures 1-2
Type repository: authors collection
Repository Country: USA
Farinacci catalog page (& compiler): n/a
Language: EN


Original Description
Diagnosis: A small species of Cruciplacolithus with an axial cross aligned with, or slightly offset from the major and minor axes of the placolith.

Description: This small placolith has an axial cross which may be aligned with the major and minor axes of the placolith. The cross is only slightly birefringent under polarised light. Four variations of this species are observed. Specimens with the axial cross aligned with the major axes of the placolith may be both bifurcated or plain, and specimens with alignment slightly off the major and minor axes can be both bifurcated or plain. The small size and weak birefringence of the species preclude the consistent identification of these variations.

Size: holotype: Length: 6.0μm; Width: 4.8μm

Etymology: In honour of Dr. Sudeep Kanungo, nannofossil specialist and good friend, University of Utah, USA.

Extra details from original publication
Remarks: The Oligocene to Eocene species Bramletteius serraculoides is distinguished from the Middle Miocene restricted species C. kanungoi by having a distal process. The axial cross is non-birefringent and lack of any bifurcation in Bramletteius serraculoides.

Occurrence: This species is present in Zones NN7 through NN9 in sediments from the Philippines, Vietnam, Malaysia, Indonesia, Gulf of Aden, Indian Ocean, West Africa, Brazil and Trinidad.

References:

da Gama, R. O. B. P. & Varol, O. (2012). New Late Oligocene to Miocene Species. Journal of Nannoplankton Research. 33(1): 1-12. gs


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Cruciplacolithus kanungoi: Catalog entry compiled by Jeremy Young. Viewed: 4-4-2020

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