Fig. 4
From: On the taxonomy and osteology of the Early Eocene North American Geranoididae (Aves, Gruoidea)
Femora of geranoidids from the Willwood Formation and extant Gruoidea. a Left femur of AMNH 5127 (cf. “Eogeranoides campivagus”) in caudal view. Left femora (caudal view) of b Psophia crepitans (Psophiidae), c Aramus guarauna (Aramidae), and d Balearica regulorum (Gruidae). e Proximal end of left femur of ?Palaeophasianus sp. (AMNH 5156) in cranial view. crt crista trochanteris. Scale bars 10 mm