Nannotax3 - ntax_cenozoic - Syracosphaera anthos

Citation: Syracosphaera anthos (Lohmann 1912) Janin, 1987

Basionym: Deutschlandia anthos Lohmann 1912

Variants:

Deutschlandia gaarderae Perch-Nielsen (1980) - species decribed from fossil record and based on exothecal coccoliths only. These coccoliths are extremely similar to those of S. anthos but are larger (6-7 µm) and have a taller central cone.

Morphology:
XCs - circular with very broad rim, elements large with kinked sutures. Central structure is small cone often with slits in base. Complete exotheca are often developed, with coccoliths showing imbricated arrangement.
BCs - long elliptical; central area vaulted, laths bipartite with step-like join forming a ring between plaque and rim; axial structure is broad plaque.
CFCs - with prominent spine ca. 1 µm high, often hidden by XCs.

Size: Coccospheres 10-15 µm; BCs 2-2.5 µm; XCs 3-5.5 µm.

Ecology & Biogeography: Mid photic

Biology & life-cycles: HOL = Periphyllophora mirabilis, see Cros et al (2000).

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]

References:

Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs V O

Cros, L., Kleijne, A., Zeltner, A., Billard, C. & Young, J. R. (2000b). New examples of holococcolith-heterococcolith combination coccospheres and their implications for coccolithophorid biology. In, Young, J. R., Thierstein, H. R. & Winter, A. (eds) Nannoplankton ecology and palaeocology, Proceedings of the INA7 conference, Puerto Rico, February 2002. Marine Micropaleontology. 39(1-4): 1-34. gs

Heimdal, B. R. & Gaarder, K. R. (1981). Coccolithophorids from the northern part of the eastern central Atlantic II. Heterococcolithophorids. “Meteor” Forschungsergebnisse, Reihe D, Biologie. 33: 37-69. gs

Janin, M. -C. (1987b). Micropaleontologie de concretions polymetalliques du Pacifique central: zone Clarion-Clipperton, chaine Centre-Pacifique, lles de la Ligne et archipel des Tuoamotou (Eocene-Actuel). Mémoires de la Société Géologique de France. 152: 1-315. gs

Lohmann, H. (1912). Untersuchungen über das Pflanzen- und Tierleben der Hochsee, zugleich ein Bericht über die biologischen Arbeiten auf der Fahrt der "Deutschland" von Bremerhaven nach Buenos-Aires in der Zeit vom 7. Mai bis 7. September 1911. Veröffentlichungen des Instituts für Meereskunde an der Universität Berlin, Neue Folge. A. Geographisch-naturwissenschaftliche Reihe. 1: 1-92. gs V O

Okada, H. & McIntyre, A. (1977). Modern coccolithophores of the Pacific and North Atlantic Oceans. Micropaleontology. 23(1): 1-55. gs

Perch-Nielsen, K. (1980a). New Tertiary calcareous nannofossils from the South Atlantic. Eclogae Geologicae Helvetiae. 73(1): 1-7. gs V O

Reid, F. M. H. (1980). Coccolithophorids of the North Pacific Central Gyre with notes on their vertical and seasonal distribution. Micropaleontology. 26(2): 151-176. gs

Skejic, S. et al. (2018). Coccolithophore diversity in open waters of the middle Adriatic Sea in pre- T and post-winter periods. Marine Micropaleontology. 143(1): 30-45. 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

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, Special Issue. 1: 1-132. gs V O

Comments (1)

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jdv (Bristol, UK)

Coccosphere size is listed as 10-15 µm but should be 7-13µm (as listed under 'Metrics'/ Cros & Fortuño 2003).

21st February 2019 3:56pm

Jeremy Young (Tonbridge, UK)

Good point - I have corrected that now, after also checking the imaged specimens.

21st February 2019 9:58pm

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Tags	LITHS: murolith, elliptical, CA: ca_disjunct, grill, plate, process, CSPH: equant, elongated, CFC, XC, CROSS-POLARS: R-prominent, T-prominent,
Metrics	Lith size: 2->3µm; Coccosphere size: 7->13µm; Liths per sphere: 30->50 Data source notes: RCC

Syracosphaera anthos

References:

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