protoctist genus vs genus Difflugia

Other hyponyms of protoctist genus include genus Amoeba, Endamoeba, genus Endamoeba, genus Globigerina, genus Arcella, genus Paramecium, genus Tetrahymena, genus Stentor, genus Vorticella, genus Conferva, genus Tribonema, Tribonema, genus Laminaria, Laminaria, genus Fucus, Ascophyllum, genus Ascophyllum, genus Sargassum, genus Euglena, genus Ulva, Ulva, genus Volvox, Volvox, Chlamydomonas, genus Chlamydomonas, genus Zygnema, Zygnema, genus Spirogyra, Chlorococcum, genus Chlorococcum, genus Chlorella, genus Oedogonium, Oedogonium, Chara, genus Chara, genus Nitella, Nitella, Desmidium, genus Desmidium, Chondrus, genus Chondrus, genus Rhodymenia, Rhodymenia, genus Porphyra, Porphyra, genus Noctiluca, genus Peridinium, Peridinium, genus Costia, genus Giardia, Chilomastix, genus Chilomastix, genus Hexamita, Hexamita, genus Trichomonas, genus Eimeria, genus Plasmodium, genus Haemoproteus, Haemoproteus, genus Leucocytozoan, genus Leucocytozoon, genus Babesia, genus Piroplasma, genus Sarcocystis, Sarcocystis.