1961
Protoleiosphaeridium papillatum — Staplin, pp. 406
1963
Lophosphaeridium cf. P. papillatum — Downie , pp. 629-631
1991
Lophosphaeridium papillatum (Staplin) Downie 1963 — Uutela & Tynni, pp. 79, fig. XVII:168
1991
Lophosphaeridium papillatum (Staplin) Downie 1963 — Smelror, pp. 84, fig. 5 C