	Authors	Year	Title
	Popov	1975	Ammonoidea (Ammonoidei). In: Paleontologicheskii Atlas kamennougol'nykh otlozhenii Urala. [In Russian]. Trudy VNIGRI 383: 111-130, pls.35-44, Leningrad (Nedra).
	Ruzhencev	1949	Sistematika i evolyutsia semeystv Pronoritidae Frech i Medlicottiidae Karpinsky. Trudy Palentologicheskogo Instituta Akademiya Nauk SSSR, 19: 1-206, fig.1-88, pl.1-17; Moskva.
	Ruzhencev & Bogoslovskaya	1971a	Namiurskii etap v evoliutsii ammonodei. Rannenamiurskie ammonoidei. Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 133: 1-382, fig.1-89, pl.1-40; Moskva.