Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the Farinacci & Howe Catalog of Calcareous Nannofossils. In other cases (e.g. non-calcifying haptophytes) the data is directly compiled on this site. The "Catalogue of Calcareous Nannofossils" was originally compiled by Prof A. Farinacci 1969-1989, since 2000 it has been updated and extended by Richard Howe - see The Farinacci and Howe Catalog - an Introduction.
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Current identification/main database link: Chrysochromulina lanceolata Chrétiennot-Dinet et al. in Puigserver et al. 2003
Compiled data
Original Description
Cells can also make a short stop and attach to a support with their haptonema (Fig. 2c). The two flagella and the haptonema are inserted in a deep depression delimiting two anterior arms, subequal in length, but not exactly symmetrical, the right arm being truncate at its extremity (Fig. 2, a, c, d, and e). Fixation may induce some shrinkage and morphological changes with TEM and SEM procedures. The asymmetry of the arms is more pronounced after fixation (Fig. 3a). Cell length is 21–38 µm with some variation of the tail length. The two flagella, subequal in length, measure 30–51 µm and 29–44 µm. The haptonema is shorter than the flagella (Fig. 2, a–e), measuring 23– 37 µm. Although held straight during swimming, it is able to coil (Fig. 2f). A refringent body is clearly visible in the posterior part of the cell (Fig. 2, a–d). A scaly investment can be observed both in living cells (Fig. 2e) and as an empty cover shed in SEM preparations (Fig. 3b). EM reveals two types of covering scales. The outer layer is made of spiny scales (Fig. 3,a–d) with an oval base measuring 1.3–1.6 x 0.9–1.2 µm. The spine is approximately equal in length to the major scale radius, measuring 0.67–0.87 µm. It is supported by four struts attenuated before reaching the rim. The inner layer is made of elongate plate scales, measuring 1.13–1.47 x 0.8–0.93 µm. Their proximal face shows about 108 radiating ribs, their distal face exhibit a pattern of crossed microfibrils difficult to discern (Fig. 3, c–e). The scales are tightly assembled on the cells and a slight shrinkage is visible on SEM preparations (Fig. 3, a and b).
Etymology:
Extra details from original publication
The same species was later found on the Atlantic coast near Concarneau in a Chrysochromulina bloom containing several species in May 1996. It was also recorded in the Arcachon Basin from mid-August to early November 1997 and from the end of September to mid-October 1998. It has not been seen there since that time. It was recorded in the Mediterranean Sea, in Andratx Harbour (Mallorca) in July 1996 and June/ July 1998, together with C. pseudolanceolata (LM observations). In the Bay of Banyuls, it was present in a June 1998 water sample, in a mixed population with C. pseudolanceolata (SEM observations). Trials for isolation and culturing of both species were unsuccessful, although relatively low cells densities were maintained in the 1-L sample kept in the translucent bottles in Banyuls.
Puigserver, M., Chrétiennot-Dinet, M. -J. & Nezan, E. (2003). Some Prymnesiaceae (Haptophyta, Prymnesiophyceae) from the Mediterranean Sea, with the description of two new species: Chrysochromulina lanceolata sp. nov. and C. pseudolanceolata sp. nov. Journal of Phycology. 39: 762-774. gsReferences:
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Chrysochromulina lanceolata: Catalog entry compiled by Jeremy Young. Viewed: 17-2-2025
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