Wikipedia
Libralces was a genus of Eurasian deer that lived during the Pliocene period. The genus' main claim to fame are their 2+ meter wide antlers, comparable in size with those of Megaloceros.
Fossils of Libralces have been found from France to Tajikistan with best known the French L. gallicus.
According to Jordi Agustí, Libracles was the ancestor of Megaloceros, though, most other authorities regard it as a relative of moose, Alces.
In the Pleistocene, there were three genera of Holarctic moose-like deer — Cervalces, Alces, and Libralces. In contrast to modern Alces, the Villafranchian Libralces gallicus had very long-beamed, small-palmed antlers and a generalized skull with moderately reduced nasals; the Nearctic Cervalces had longer nasals and more complex antlers than Libralces. Azzaroli 1953 added Alces latiforns to Libralces, but this position has been challenged.