Nannotax3 - ntax_main - Calciosolenia brasiliensis Nannotax3 - ntax_main - Calciosolenia brasiliensis

Calciosolenia brasiliensis


Classification: ntax_main -> Syracosphaerales -> Calciosoleniaceae -> Calciosolenia -> Calciosolenia brasiliensis
Sister taxa: C. brasiliensis, C. corsellii, C. murrayi ⟩⟨ C. alternans, C. aperta, C. sp. ⟩⟨ C. fossilis, C. huberi, C. sp. Mesozoic

Taxonomy:

Citation: Calciosolenia brasiliensis (Lohmann, 1919) Young in Young et al., 2003
Taxonomic rank: species
Basionym: Cylindrotheca brasiliensis Lohmann, 1919
Synonyms:
Taxonomic discussion: Liths typically larger than those of C. murrayi, 3-7 µm long.
Usually recorded as Anoplosolenia brasiliensis in older literature, see discussion of genus.

Distinguishing features:
Parent taxon (Calciosolenia): Coccosphere with rhombic muroliths with central area floored by transverse laths (scapholiths); varimorphic or dimorphic. Rim bicyclic in LM (the outer part of the rim is dark in xpl, the inner part bright). Typically small, fragile and dissolution susceptible, and so only consistently seen as fossils when preservation is good.
This taxon: Coccosphere without spines; coccoliths >5µm long

Farinacci & Howe catalog pages: Cylindrotheca brasiliensis, C. grani * , C. grani closterium * , C. grani cylindrothecaeformis * , C. tenuis * , S. ganoretus * , S. malenus *


Morphology:

Coccosphere varimorphic, slender; ends tapered with many very elongate liths, but no spines. Liths have very regular bars, which offset neatly to form median ridge. Inner cycle of R-units is better developed in the terminal coccoliths so these show stronger birefringence.
For identification note that the liths usually are significantly larger than E. huxleyi coccoliths and have separated laths.

Size:
Liths typically larger than those of C. murrayi and C. corsellii, 5-7 µm long (NB Malinverno gives size range of body coccoliths as 5.8-7µm but specimens with coccoliths of 5-5.5µm are common, Young unpubl. obs.)

Search data:
LITHS: murolith, quadrate, CA: ca_disjunct, grill,
CSPH: tubular, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Lith size: 5->7µm; Coccosphere size: 45->95µm; Liths per sphere: 80->190
Data source notes: csph & lith size from Malinverno 2004 & my obs [JRY]; lith numbers from Yang & Wei 2003, range of estimates
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: [JRY rough estimate]

Plot of occurrence data:

References:

Andruleit, H., Rogalla, U. & Staeger, S. (2005). Living coccolithophores recorded during the onset of upwelling conditions off Oman in the western Arabian Sea. Journal of Nannoplankton Research. 27(1): 1-14. gs

Konno, S. & Jordan, R. W. (2006). Lagoon coccolithophorids from the Republic of Palau, NW Equatorial Pacific. Journal of Nannoplankton Research. 28(2): 95-110. gs O

Lohmann, H. (1919). Die Bevölkerung des Ozeans mit Plankton nach den Ergebnissen des Zentrifugenfänge während der Ausreise der "Deutschland" 1911. Zugleich ein Beitrag zur Biologie des Atlantischen Ozeans. Archiv für Biontologie. 4(3): 1-617. gs

Malinverno, E. (2004). Morphological variability within the genus Calciosolenia (coccolithophorids) from the eastern Mediterranean Sea. Micropaleontology. 50(supl. 1): 81-91. gs

Schiller, J. (1925). Die planktonischen Vegetationen des adriatischen Meeres. A. Die Coccolithophoriden-Vegetation in den Jahren 1911-14. Archiv für Protistenkunde. 51: 1-130. gs

Winter, A., Reiss, Z. & Luz, B. (1979). Distribution of living coccolithophore assemblages in the Gulf of Elat ('Aqaba). Marine Micropaleontology. 4: 197-223. gs

Yang, T. -N., Wei, K. & Wu, J. -T. (2012). Marine coccolithophores around Taiwan. Biodiversity Research Center, Academica Sinica, Taipei. 1-96. gs

Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research. S1: 1-132. gs

nannotaxlogo400px

Calciosolenia brasiliensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 9-11-2025

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=203 Go to Archive.is to create a permanent copy of this page - citation notes
Powered by Mikrotax taxonomy content management system developed by Jeremy Young


Add Comment

* Required information
Captcha Image

Comments

No comments yet. Be the first!