Nahmavis grandei (Musser and Clarke 2020; Eocene) was originally considered close to the origin of gruiformes and charadriformes. Here it nests with the Kori bustard, Ardeotis.
Musser G and Clarke JA 2020. An exceptionally preserved specimen from the Green River Formation elucidates complex phenotypic evolution in Gruiformes and Charadriiformes. Frontiers in Ecology and Evolution - Paleontology https://doi.org/10.3389/fevo.2020.559929
