Assertion: monotreme | /r/HasProperty | rich et al
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Source sentences:
text: As in all true mammals, the tiny bones that conduct sound to the inner ear are fully incorporated into the skull, rather than lying in the jaw as in cynodonts and other pre-mammalian synapsids; however, this feature, too, is now claimed to have evolved independently in monotremes and therians (Rich et al, 2005).