Fig. 4From: A North American stem turaco, and the complex biogeographic history of modern birdsComparison of hindlimb proportions among the major clades of Otidimorphae. Hindlimb Index is computed as the ratio between the sum of tarsometatarsus + tibiotarsus length, and femur length (illustrated on a silhouette of holotype skeleton of Foro panarium). Unlike crown group Musophagidae, F. panarium exhibited long, gracile legs more similar to a small bustard or the neomorphine cuckoo Dromococcyx phasianellus. The lowest Hindlimb Index value overall is exhibited by the putative stem cuculid, Eocuculus cf. cherpinaeBack to article page