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Calcidiscus leptoporus

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Journal Article
Published: 01 September 2003
Journal of Paleontology (2003) 77 (5): 825–830.
...PATRICK QUINN; HANS R. THIERSTEIN; LARRY BRAND; AMOS WINTER Abstract Culturing experiments of the intermediate morphotype of the cosmopolitan coccolithophore Calcidiscus leptoporus , indicate that the size of its coccosphere and of its coccoliths are affected only in a minor way by temperature...
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Journal Article
Published: 01 July 2000
Journal of Paleontology (2000) 74 (4): 712–730.
...MICHAEL KNAPPERTSBUSCH Abstract A detailed investigation of the morphological evolution of the coccolithophorids Calcidiscus leptoporus and C. macintyrei from the Early Miocene to the Quaternary shows that microevolutionary patterns were very complex. Speciation patterns such as cladogenesis...
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<span class="search-highlight">Calcidiscus</span> <span class="search-highlight">leptoporus</span>  ( sensu lato ) morphotypes  1–3 large morphotype&#x2F; C...
Published: 01 October 2005
PLATE 5 Calcidiscus leptoporus ( sensu lato ) morphotypes 1–3 large morphotype/ Calcidiscus quadriperforatus 4–6 intermediate morphotype/ Calcidiscus leptoporus ( sensu stricto ) 7–10 small morphotype. Images 1–10 all the same scale. 11–13 coccolith details of the large (11
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Figure  3 —Anatomy of  <span class="search-highlight">Calcidiscus</span> <span class="search-highlight">leptoporus</span>  coccoliths.  1 , Living cocc...
Published: 01 July 2000
Figure 3 —Anatomy of Calcidiscus leptoporus coccoliths. 1 , Living coccosphere, morphotype S. Mediterranean Sea. Plankton sample FF 8, Station MAJ, 0–10 m, VICOMED I-cruise (for information about this sample refer to Knappertsbusch, 1993 ). Scale bar = 1 μm; 2 , Proximal (inner) view
Journal Article
Published: 01 December 2004
Micropaleontology (2004) 50 (Suppl_1): 35–43.
... and Florisphaera profunda, measurements have been made on Calcidiscus leptoporus, Gephyrocapsa oceanica, Helicosphaera carteri and Syracosphaera pulchra. This study strongly reinforces the previous conclusion that size calibrations are essential for reliable results, i.e. that the superficially attractive...
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- Selected photomicrographs of calcareous nannofossils observed in the stra...
Published: 01 February 2024
. Helicosphaera walbersdorfensis , XPL (d,e) and PPL (f); g.-h. Calcidiscus leptoporus XPL and PPL (h); i. Helicosphaera carteri , XPL; l.-m. Sphenolithus heteromorphus , 0° (l) and 45° (m), XPL; n. Reticulofenestra , XPL; o. Reticulofenestra XPL; p.-q. Calcidiscus premacintyrei XPL(p) and PPL (q); r
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Calcareous nannoplankton from the Aliwal Shoal. All illustrations are light...
Published: 01 December 2007
, sample GC-6, pol. ( 8 ) Gephyrocapsa omega , sample GC-10, pol. ( 9 ) Calcidiscus leptoporus , sample GC-6, tr. ( 10 ) Calcidiscus leptoporus , sample GC-6, pol. ( 11 ) Calcidiscus leptoporus , sample GC-10, pol. ( 12 ) Calcidiscus leptoporus , sample GC-6, pol. ( 13 ) Dictyococcites perplexa
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Growth pattern variations in  <span class="search-highlight">Calcidiscus</span>  and  Umbilicosphaera . Coccolith...
Published: 03 January 2003
Figure 8. Growth pattern variations in Calcidiscus and Umbilicosphaera . Coccoliths of three closely related species, in distal view. In each of these species the entire distal shield is formed of V-units, and the visible surface are rhombic faces. (a) Calcidiscus leptoporus . (b
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Estimates (crosses) of the weight of a specimen for each of the following s...
Published: 01 October 2005
TEXT-FIGURE 4 Estimates (crosses) of the weight of a specimen for each of the following species ( Helicosphaera carteri, Calcidiscus leptoporus, Gephyrocapsa oceanica, Syracospheara spp , and Emiliania huxleyi ) from 90 orientations of the coccoliths ranging from 0° to 90° from the polarizing
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Calcareous nannoplankton from the Durban Bluff (offshore aeolianite sample)...
Published: 01 September 2012
) Gephyrocapsa oceanica, pol. ( C ) Umbilicosphaera sibogae, tr. ( D ) Umbilicosphaera sibogae, pol. ( E ) Calcidiscus leptoporus, pol.
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Coccolithophore life cycles. Diagram at top summarizes the basic life cycle...
Published: 03 January 2003
, respectively, as illustrated here by coccospheres of the two phases of Calcidiscus leptoporus ssp. quadriperforatus . Combination coccospheres with both coccolith types occur very rarely recording the life cycle transition, as shown by the centre SEM and enlarged view.
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Coccolithophores found in sediment trap samples off Cape Blanc (CB2–4):  A ...
Published: 23 December 2015
Explanation of Plate 1. figs A–F. Coccolithophores found in sediment trap samples off Cape Blanc (CB2–4): A , Emiliania huxleyi, Acanthoica quattrospina ; B , Gephyrocapsa oceanica ; C , Calcidiscus leptoporus ; D , Gladiolithus flabellatus ; E , Umbellosphaera tenuis ; F
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Mean composition of the coccolithophore assemblages and average coccolith f...
Published: 23 December 2015
. 2002 ). E. hux, Emiliania huxleyi ; C. lepto, Calcidiscus leptoporus ; G. oce, Gephyrocapsa oceanica ; C. pela, Coccolithus pelagicus ; F. prof., Florisphaera profunda ; H. car, Helicosphaera carteri . The species are always in the same order (clockwise) arranged (corresponding to the key first
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1  Gephyrocapsa oceanica, Emiliania huxleyi, Calciosolenia brasiliensis  (l...
Published: 01 December 2004
, sample PTIV1B7).
 4 Syracosphaera lamina, Rhabdosphaera clavigera, E. huxleyi (late August 2001, sample PTV1B1). 
 5 Calcidiscus leptoporus, E. huxleyi, Calciosolenia brasiliensis, Gladiolithus flabellatus, Syracosphaera spp. (late April, sample PTIV1B7). 
 6 Syracosphaera molischii (coccosphere
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(A) Factor analysis biplot for the Mira estuary (Portugal) records. Defined...
Published: 25 November 2020
bigelowii ; CL— Calcidiscus leptoporus ; CM— Coronosphaera mediterranea ; CP— Coccolithus pelagicus spp. braarudii ; GM— Gephyrocapsa muellerae ; GO— Gephyrocapsa oceanica ; HC— Helicosphaera carteri ; Sy— Syracosphaera spp.; US— Umbilicosphaera sibogae . (B) Ideal atmospheric and oceanic conditions
Journal Article
Published: 01 October 2005
Micropaleontology (2005) 51 (4): 267–288.
...PLATE 5 Calcidiscus leptoporus ( sensu lato ) morphotypes 1–3 large morphotype/ Calcidiscus quadriperforatus 4–6 intermediate morphotype/ Calcidiscus leptoporus ( sensu stricto ) 7–10 small morphotype. Images 1–10 all the same scale. 11–13 coccolith details of the large (11...
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Photomicrographs of selected calcareous nannofossils from Site U1457. A 5 µ...
Published: 10 April 2019
; (10) Reticulofenestra bisecta (reworked); (11) Calcidiscus leptoporus ; (12) Sphenolithus abies ; (13, 14) Discoaster brouweri ; (15, 16) Discoaster surculus ; (17) Discoaster asymmetricus ; (18) Discoaster tamalis ; (19) Discoaster triradiatus ; (20) Discoaster bergenii ; and (21, 22) D
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Calcareous nannofossil taxa and diatom fragments from Rocchetta Sant’Antoni...
Published: 01 June 2017
carteri (Wallich). ROC, 2a: XP, 2b: PL. 3 - Cyclicargolithus floridanus (Roth & Hay). ROC, 3a: XP, 3b: PL. 4 - Calcidiscus leptoporus (Murray & Blackman). ROC, 4a: XP, 4b: PL. 5 - Discoaster variabilis Martini & Bramlette. ROC, PL. 6 - Diatom skeleton fragment. ROC, PL. 7
Journal Article
Published: 01 December 2007
South African Journal of Geology (2007) 110 (4): 647–653.
... , sample GC-6, pol. ( 8 ) Gephyrocapsa omega , sample GC-10, pol. ( 9 ) Calcidiscus leptoporus , sample GC-6, tr. ( 10 ) Calcidiscus leptoporus , sample GC-6, pol. ( 11 ) Calcidiscus leptoporus , sample GC-10, pol. ( 12 ) Calcidiscus leptoporus , sample GC-6, pol. ( 13 ) Dictyococcites perplexa...
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Journal Article
Published: 23 December 2015
Journal of Micropalaeontology (2016) 35 (1): 103–116.
...Explanation of Plate 1. figs A–F. Coccolithophores found in sediment trap samples off Cape Blanc (CB2–4): A , Emiliania huxleyi, Acanthoica quattrospina ; B , Gephyrocapsa oceanica ; C , Calcidiscus leptoporus ; D , Gladiolithus flabellatus ; E , Umbellosphaera tenuis ; F...
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