> the fossil's jaw looks a lot like those of modern fish... She says this shows ...

		joshuahedlund on Sept 26, 2013 \| parent \| context \| favorite \| on: 419-million-year-old fish fossil resolves 'missing... > the fossil's jaw looks a lot like those of modern fish... She says this shows the Placoderm to be the ancestors of modern fish. Admittedly skeptical layman here... but is that really enough evidence to draw that conclusion with that much certainty? Or is there more unreported context?

No, not really. Since it isn't observational it is best guess.