Cryptophyte Systematics
| Genus | Biliprotein | Position of Nucleomorph | Furrow-Gullet System | IPC | SPC | Rhizostyle | Additional Features |
| Chroomonas | PC645 or PC630 | free | forked gullet | stepped rectangular plates | fibrils, plates | ? | thylakoids traverse the pyrenoid matrix |
| Cryptomonas (cryptomorph) | PE566 | free | combination | polygonal plates | fibrils | non-keeled | - |
| Cryptomonas (campylomorph, formerly separate genera Campylomonas and Chilomonas [colourless]) | PE566 or leukoplast | free | combination | sheet | fibrils | keeled | - |
| Falcomonas | PC569 | free | furrow | stepped hexagonal plates | fibrils, plates | ? | - |
| Geminigera | PE545 | embedded in nucleus | combination | sheet | fibrils | keeled | deeply bilobed plastid with two pyrenoids |
| Goniomonas | no plastid | – | furrow + cytopharynx | longitudinal plates | longitudinal plates | non-keeled | flagella with spikes and fibrils |
| Guillardia | PE545 | free | gullet | sheet? | longitudinal plates | keeled | - |
| Hanusia | PE545 | free | furrow | sheet | rosulate scales | keeled | - |
| Hemiselmis | PC577, PC612, PC630 or PE555 | free | short gullet | hexagonal plates | hexagonal plates | non-keeled | thylakoids traverse pyrenoid matrix |
| Komma | PC645 | free | gullet | hexagonal plates | hexagonal plates | ? | - |
| Plagioselmis | PE545 | free | furrow | hexagonal plates, tail without plates | ? | ? | - |
| Proteomonas (1n) | PE545 | free | furrow | hexagonal plates | hexagonal plates | non-keeled | dimorphic |
| Proteomonas (2n) | PE545 | free | furrow | sheet | fibrils + rosulate scales | keeled | dimorphic |
| Rhinomonas | PE545 | embedded in pyrenoid | gullet | hexagonal plates | hexagonal plates, fibrils | ? | - |
| Rhodomonas | PE545 | embedded in pyrenoid | combination | rectangular plates | fibrils | keeled | - |
| Storeatula | PE545 | embedded | gullet | sheet | fibrils | keeled | - |
| Teleaulax | PE545 | free | furrow | sheet | fibrils + rosulate scales | keeled | - |
Genera sorted in alphabetical order. Ultrastructural characters and biliproteins according to Mignot (1965), Mignot et al. (1968), Roberts et al. (1981), Grim and Staehelin (1984), Santore (1984; Rhodomonas = Pyrenomonas), Hill and Wetherbee (1986, 1988, 1989, 1990), Hill (1991a, b, c), Novarino et al. (1994) Hoef-Emden (1997), Deane et al. (1998), Clay and Kugrens (1999), Novarino (2003), Lane and Archibald (2008). (1n): Proteomonas haplomorph; (2n): Proteomonas diplormorph; embedded: nucleomorph embedded in pyrenoid matrix; IPC: inner periplast component; keeled: keeled rhizostyle (posteriorly directed microtubular root of the flagellar root system) with wing-like appendages; PC: phycocyanin; PE: phycoerythrin; SPC: surface periplast component; unknown: not mentioned or examined.