	Authors	Year	Title
	Ruzhencev	1933	O nekotorykh nizhnepermskikh ammonoideyakh Aktyubinskogo rayona. Byulleten' Moskovskaya obshchestva ispytatelei prirody, otdelenie geologii, 11 (2): 164-180, fig.1-6, pl.4; Moskva.
	Ruzhencev	1939c	Development of the family Metalegoceratidae Plummer & Scott. [Razvitie semeistva Metalegoceratidae Plummer & Scott.] Comptes Rendus (Doklady) de l'Academie des Sciences de l'URSS, 24 (3): 310-312, fig.1-3; Moskva.
	Tumanskaia	1963	Permskie ammonei tsentral'nogo Pamira i ikh stratigraficheskoe znachenie. Otd. geol.-geogr. nauk Akad. Nauk SSSR: 1-119, fig.1-48, pl.A,B,1-23; Moskva.