1881
Phacops (Chasmops ) maxima — Schmidt, pp. 112, fig. IV 5,7; X 18; XI 13; XV 35
1907
Phacops maxima — Schmidt, pp. 6
1998
Toxochasmops (Schmidtops) proavus sp. nov. — Rõõmusoks, pp. 190, fig. V 1; VII 1-8
2013
Toxochasmops (Schmidtops) proavus — Krueger, pp. 55, fig. 12:1-15