Hoplitophryidae

Hoplitophryid astome ciliate, anterior end completely ciliated; attachment structure absent with only a single sagittal anterior suture extending from anterior pole along one surface

Hoplitophryid astome ciliate, anterior nonciliated region; with 2 lateral sutures; cortical fibers insert on inverted "V"- or "U"-shaped attachment structure

Hoplitophryid astome ciliate, anterior nonciliated region; somatic kineties inserting on nonciliated area but forming no sutures; subcortical structures reduced or none