Assertion: patella's position | /r/CapableOf | comprise other crown clade birds
Facets:
Source sentences:
text: The phylogenetic position of Palaeognathae (ratites and their relatives; emus, ostriches, tinamous, kiwis and kin; Fig. 1 ) as a relatively basal clade of birds—sister group to the enormously diverse Neognathae, comprising all other crown clade birds—means that they are an important outgroup for exploring the early evolution of traits, such as the patella, in birds.