Webster's Revised Unabridged Dictionary · 1913

Cheirotherium

Cheirotherium , proper noun

[New Latin, from Greek chei`r hand + qhri`on beast.]

(Poleon.) A genus of extinct animals, so named from fossil footprints rudely resembling impressions of the human hand, and believed to have been made by labyrinthodont reptiles. See Illustration in Appendix.