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Description of HyperamoebaCircumscription: Heterotrophic protist with amoeboid and gliding (uni)flagellated stages, flagellated stage uniflagellated, and reminiscent of pelobionts but with tubulocristate mitochondria. Cysts also produced. Ultrastructural identity: Mitochondria with tubular cristae, some with central core, dictyosome present cristate. Two apical basal bodies give rise to four microtubular rootlets, two conical arrays of microtubules extend toward nucleus and centre of cell. Synapomorphy: Tubulocristate protist with double cone of microtubules arising from anterior pair of basal bodies.