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 | This article relies largely or entirely on a single source. (October 2023) |
| 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 
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| Domain: | Eukaryota |
| Clade: | Pancryptista |
| Phylum: | Cryptista |
| Subphylum: | Rollomonadia |
| Superclass: | Cryptomonada |
| Class: | Cryptophyceae |
| Order: | Pyrenomonadales |
| Family: | Geminigeraceae B. L. Clay, P. Kugrens & R. E. Lee, 1999 |
| Genera | |
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]
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