†Pseudoclavus singularis Mambetov 1979

Mambetov 1979. [The Lower Cambrian of the Talassk Ala-Too and its correlation with the sections of Karatau Minor and the Siberian Platform.] Rossiiskaya Akademiya Nauk Sibirskoe Otdelenie Trudy Instituta Geologii i Geofiziki, 406 1979: 98-138