Chrysochromulina andersonii

Original description: Haptophyte, marine, photosynthetic, and symbiotic with polycystine radiolarians and foraminiferans. In host, cells spherical and nonmotile. In culture, the haptophyte produces motile cells. Free-living motile cells saddle-shaped, approximately 3–5 μm long and 3–4 μm wide, with appendages inserted apically in a slight depression. Two equal to subequal flagella, 6–12 μm long. One coiling haptonema, 6–16 μm long, slightly longer than the two flagella. Flagella and haptonema originated from the concave, ventral side of the cell, in the apical to median region. Cells covered by two types of scales arranged in two layers. Inner layer was composed of oval to round scales, 0.19–0.26 μm in diameter, and the outer layer composed of oval to round scales, 0.25–0.45 μm in diameter, with upright rims (37–55 nm high). Both scale faces had a faint cross in centre and radiating ridges extended from the faint cross to the periphery. Two golden-brown parietal chloroplasts contained three thylakoid lamellae and immersed pyrenoids. Nucleus on dorsal side of cell in median to posterior region. Golgi body positioned in front of nucleus.

Farinacci & Howe catalog pages:
Chrysochromulina andersonii

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage). Data source:
First occurrence (base): within (-Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested.
• (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: definite Chrysochromulina

Chrysochromulina andersonii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 10-7-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=20528 Go to Archive.is to create a permanent copy of this page - citation notes

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