Fig. 12 in Early Frasnian acanthodians from central Iran

Fig. 12. SEM micrographs of?ischnacanthiform tooth whorls from early Frasnian, horizon GI4 of an unnamed formation in the Chahriseh section, Kaftari Mt., central Iran. A. AEU 314 in occluso−lateral view. B. AEU 315 in occluso−lateral view. C. AEU 316 in occlusal view. D. AEU 317 in occlusal view. E. AEU 318 in occluso−lateral view. F. AEU 319 in occlusal (F1) and in occluso−lateral (F2) views. A, B, and F2 anterior to the left, C, D, and F1 anterior to the page bottom, and E anterior to the right.