†Pscemiaspis Abdullaev

Abdullaev. [Trilobites and graptolites from the Ordovician of the Pskem Ridge.]. Abdullaev, R.N.; Khaletzkaya, O.N.[Lower Palaeozoic of the Chatkal'sky Ridge.] Akad. Nauk Uzb. SSR. Inst. Geol. geof. FAN, Tashkent. 104 pp., 10 figs, 8 pls., 1970, 1970: 19-56. Chapter pagination: 19-56