This is Figure 7 from Taylor (1976). Max Taylor considered the phylogeny of flagellated protists in a cladistic paradigm. The categories of characters (all ultrastructural and cytological) were: mitotic mechanisms, flagella, chloroplast structure, and mitochondria. The tree that he produced was remarkably modern in many ways by suggesting connections between the ciliates and dinoflagellates, between the kinetoplastids and the euglenoids, between the phragmoplastic and phycoplastic plants, and between the hypermastigids-trichomonads-diplomonads-retortomonads.