Geminigeraceae is a family of cryptophytes containing the five genera Geminigera, Guillardia, Hanusia, Proteomonas and Teleaulax.[1] They are characterised by chloroplasts containing Cr-phycoerythrin 545, and an inner periplast component (IPC) comprising "a sheet or a sheet and multiple plates if diplomorphic". The nucleomorphs are never in the pyrenoid, and there is never a scalariform furrow. The cells do, however, have a long, keeled rhizostyle with lamellae (wings).[1]
| Geminigeraceae | |
|---|---|
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| Guillardia theta. DAPI-staining images showing the representative cells of cell cycle stages based on the localization of the nucleus and the shape of the chloroplast. DIC, images of differential interference contact; Chl, chloroplast autofluorescence; Chl/DAPI, merged images of Chl and DAPI. The double arrowhead indicates constriction of the chloroplast division site. Scale bar = 5 µm | |
Scientific classification  | |
| Domain: | Eukaryota |
| Clade: | Diaphoretickes |
| Phylum: | Cryptista |
| Class: | Cryptophyceae |
| Order: | Pyrenomonadales |
| Family: | Geminigeraceae B. L. Clay, P. Kugrens & R. E. Lee, 1999 |
| Genera | |