1886
Hipponicharion eos sp. nov. — Matthew, pp. 64, fig. 6:19;19a,19b
1984
Hipponicharion cf. eos Matthew — Bednarczyk, fig. 5:6
1997
Hipponicharion eos Matthew, 1886 — Siveter & Williams, pp. 45-46, fig. 6:4-8;7:1,2
2002
Hipponicharion eos Matthew, 1886 — Gonzalo & Hinz-Schallreuter, fig. 4A,5C
2004
Hipponicharion ichnusum sp. nov. — Elicki & Pillola, pp. 392, fig. 2:1,2, text fig. 6
2008
Hipponicharion eos Matthew, 1886 — Dies Álvarez et al., pp. 652, fig. 3C,D