Geminigeraceae is a family of cryptophytes containing six genera. They are characterised by chloroplasts containing Cr-phycoerythrin 545, and an inner periplast component comprising "a sheet or a shee

Nucleomorphs are small, vestigial eukaryotic nuclei found between the inner and outer pairs of membranes in certain plastids. They are thought to be vestiges of red and green algal nuclei that were en