 | Ptychopyge Angelin, 1854 |
Selection of related publications
Balashova, E. A. 1964.
Morfologiâ, filogeniâ i stratigrafičeskoe značenie ranneordovikskogo podsemejstva Ptychopyginae Pribaltiki. Voprosy paleontologii IV,
3-56. Voprosy paleontologii, IV, pp. 3-56.
References based on distribution