FIGURE 2 a–f. Eutetrarhynchus platycephali. a. Scolex. b. External surface, basal armature. c. Internal surface, metabasal armature. d. Bothrial surface, metabasal armature. e. External surface, metabasal armature. f. Mature segment. Fig. 2 g in Trypanorhynch cestodes of elasmobranchs from the Persian Gulf - Haseli, Mohammad (2010)