Ludiortyx

Ludiortyx is a bird genus from the Late Eocene. Its remains have been found in the Montmartre Formation at the Montmartre (Paris, France). A single species is accepted, Ludiortyx hoffmanni.
This bird is of uncertain relationships; it has been variously considered to be an ancestral rail or to belong to the Quercymegapodiidae, a prehistoric group of Galliformes (landfowl). The material assigned to it were initially considered to be of 2 species, one that was at first believed to be a "Tringa" wader, the other assigned to the galliform genus "Palaeortyx". Even the latter assignment was probably much in error as though its relationships are not known, "Palaeortyx" was probably not a quercymegapodiid.
Synonyms.
Apart from the genus-level synonym "Eortyx", "L. hoffmanni" has undergone quite a number of name changes due to the confusion about its placement: 