| Geminigeraceae | |
|---|---|
| |
| 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 |
| Phylum: | Cryptista |
| Superclass: | Cryptomonada |
| Class: | Cryptophyceae |
| Order: | Pyrenomonadales |
| Family: | Geminigeraceae Clay, Kugrens and Lee, 1999 |
| Type genus | |
| Geminigera Hill, 1991
| |
| Genera | |
| |
Geminigeraceae is a family of cryptophytes containing six genera.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).2
References
References
- Guiry, M.D. & Guiry, G.M. 2025. AlgaeBase. World-wide electronic publication, University of Galway. https://www.algaebase.org; searched on 14 May 2026.
- Brec L. Clay, Paul Kurgens & Robert E. Lee (1999). "A revised classification of Cryptophyta". Botanical Journal of the Linnean Society. 131 (2): 131–151. doi:10.1111/j.1095-8339.1999.tb01845.x.