Fig. 2From: A new zygodactylid species indicates the persistence of stem passerines into the early Oligocene in North AmericaPhylogenetic context of Zygodactylus ochlurus n.sp. a Reduced consensus of the 30 most parsimonious trees from phylogenetic analysis. Positions of variable taxa are indicated above the branches they occupy in the full tree set. b Left manus showing intermetacarpal process (imp) c Left pes showing elongate proximal phalanx of digit I (pI-1)Back to article page