1896
Pycnomphalus rotella Koken — Koken, E., pp. 399
1897
Pycnomphalus borkholmiensis n. sp. — Koken, E., pp. 185
1900
Pycnomphalus borkholmiensis Koken — Wiman, pp. 203
1925
Pycnomphalus borkholmiensis Koken — Koken & Perner, pp. 134, fig. 32: 1-4, 5-6, 9
1925
Pycnomphalus aff. borkholmiensis Koken — Koken & Perner, pp. 134, fig. 32: 5, 6