Nannotax3 - ntax_main - Helicosphaera HOL catilliferus type

Citation: Helicosphaera HOL catilliferus type

Basionym: Syracosphaera catillifera Kamptner 1937

Synonyms:

Syracosphaera catillifera Kamptner 1937;
Syracosphaera (Syracolithus) catillifera (Kamptner 1937) Kamptner 1941
Syracolithus catilliferus (Kamptner 1937) Deflandre 1952;
Calyptrosphaera catillifera (Kamptner 1937) Gaarder 1962;
Calyptrolithophora catillifera (Kamptner 1937) Norris 1985;
Helicosphaera carteri HO solid, - informal name used by Cros et al. 2000
Helicosphaera carteri HOL solid, - informal name used by Young et al. 2003
Syracosphaera cornus Kamptner (1941) [my interpretation - JRY 2015, but tentative as coccosphere shape is atypical]

Taxonomic discussion: Nomenclature here follows Young & Bown (2014)

Distinguishing features:
Parent taxon (Helicosphaera HOL): Monomorphic; liths solid - formed of layers of crystallites in rhomboid array
Coccolith distal surface with central boss and varying number of depressions.
This taxon: Liths with flat-top without perforations; pyramidal boss near centre; rim 5-6 crystallites high; central opening on proximal side small or absent;

The absence of perforations results in the rhombohedral array structure being particularly clearly visible, in good SEMs

Liths 2-3 µm long; 5-7 crystallites high

Combination coccospheres with Helicosphaera carteri observed but also observed in culture as alternate stage of H. wallichii (K. Hagino pers. comm.)

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

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 1998. Marine Micropaleontology . 39(1-4): 1-34. gs

Deflandre, G. (1952a). Classe des Coccolithophoridés. (Coccolithophoridae. Lohmann, 1902). In, Grassé, P. P. (ed.) Traité de Zoologie. Masson, Paris 439-470. gs

Gaarder, K. R. (1962). Electron Microscope Studies on Holococcolithophorids. Nytt Magasin for Botanikk. 10: 35-51. gs O

Kamptner, E. (1937b). Neue und bemerkenswerte Coccolithineen aus dem Mittelmeer. Archiv für Protistenkunde. 89: 279-316. gs O

Kamptner, E. (1941). Die Coccolithineen der Südwestküste von Istrien. Annalen des Naturhistorischen Museums in Wien. 51: 54-149. gs O

Norris, R. E. (1985). Indian Ocean nanoplankton. II. Holococcolithophorids (Calyptrosphaeraceae, Prymnesiophyceae) with a review of extant genera. Journal of Phycology. 21: 619-641. gs

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

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

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. & Bown, P. R. (2014). Some emendments to calcareous nannoplankton taxonomy. Journal of Nannoplankton Research. 33(1): 39-46. 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

Helicosphaera HOL catilliferus type

References:

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