Taxonomy:
Catalog entries: Chrysochromulina novae-zelandiae
Original description: Solitary cells, c. 7 µm in diameter as seen in a whole mount (Fig. 13) with two flagella c. 25 µm long, and a coiling haptonema of unknown length (Fig. 14). The cell covered by a periplast of scales, of which two types are very numerous (Figs 16, 18). One (apparently forming an under-layer) is oval, and measures 0.48-0.52 x 0.33-0.37 µm. A system of radiating ridges visible on both surfaces, extending from a rectangular patternless centre. One surface — probably the dorsal side — with a patternless rim.
The second scale type which occurs in large numbers, is circular to oval (Fig. 16), almost certainly forming an upper layer. The scales are smaller than the "under-layer" scales, measuring 0.29-0.38 µm in diameter. A patternless (probably dorsal) rim is present, and radiating lines, distinct on the rim-less side, on the other side are less distinct and visible only in the peripheral part of the scale.
Scales with triangular bases are present in small numbers (Fig. 15), measuring c. 0.37 µm in diameter, apparently with a small spine in each corner.
Geological Range:
Last occurrence (top): Extant. Data source:
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:
Moestrup, Ø. (1979). Identification by electron microscopy of marine nanoplankton from New Zealand, including the description of four new species. New Zealand. Journal of Botany. 17: 61-95. gsReferences:
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Chrysochromulina novae-zelandiae compiled by Jeremy R. Young viewed: 30-5-2023
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