Zoologist Darren Naish has written a thoughtful essay on “Are Sumatran Rhinos Really Living Fossil?” His blog is in response to my comments on the “living fossil” issue, discussed here. I disagree with Naish’s restrictive parameters, of course, as I see this more an issue of educational semantics influenced by zoology, not ruled by it. Darren Naish’s approach is worthy of your attention and he has every right to his very informed point of view. Needless to say, in this case, I was employing the “living fossil” definition that this rhino species is “a living species/clade with many ‘primitive’ characteristics...