Taxonomy:
It was, however, reported in Young et al (2003) that H. lacuna forms higher coccoliths than H. globosa, based on culture observations of I. Probert.
Distinguishing features: Coccoliths similar to H. globosa but higher and tube better developed (tube ca 0.8µm high)
Farinacci & Howe catalog pages: Hymenomonas lacuna
Size: Cells 25-30µm
Cultures: strains of this species are maintained in culture, for details see Roscoff culture collection.
Tags | LITHS: murolith, elliptical, CA: vacant, CSPH: equant, monomorphic, |
Metrics | Lith size: 1->2µm; Segments: 14->15; Coccosphere size: 15->30µm; Data source notes: RCC |
Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY rough estimate]
Plot of occurrence data:
Gayral, P. & Fresnel, J. (1976). Nouvelles observations sur deux Coccolithophoracées marines: Cricosphaera roscoffensis (P. Dangeard) comb. nov. et Hymenomonas globosa (F. Magne) comb nov. Phycologia. 15(339-355): -. gs Lefort, F. (1975). Etude du quelques Coccolithophoracees marines rapportees aux genres Hymenomonas et Ochros_phaera. 15, 213-229. Cahiers de Biologie Marine. 1975(213-229): -. gs Meier, K. J. S., Kinkel, H. & Young, J. R. (2014b). A note on calcareous nannoplankton from the Kieler Förde (Baltic Sea). Journal of Nannoplankton Research. 33(1): 29-37. gs V O Pienaar, R. N. (1976). The microanatomy of Hymenomonas lacuna sp. nov. (Haptophyceae). Journal of the Marine Biological Association of the United Kingdom. 56: 1-11. 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 OReferences:
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Hymenomonas lacuna compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-3-2021
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