Assertion: emu's claw | /r/HasProperty | distribution
Facets:
Source sentences:
text: I claws are generally present in ratites, galliforms, anseriforms, ciconiiforms, charadriiforms and others (Fisher 1940) - a distribution which strongly suggests that they are primitively retained throughout neornithines, and lost selectively here and there, especially among so-called 'higher landbirds'.