You (Rokke) make good points in rebutal, but I think I gotta go along with "unremarkable".
Bear in mind that not only are these apparently short sequences, but this is a fairly unremarkable structural protein. It performs pretty much the same mechanical function in any creature. It's not likely to be as varied and unique from species to species or taxa to taxa as a protein that has a chemical function and/or that has to mesh into some complex biological pathways or functions.
If that's the case, wouldn't finding protein as diverse as chicken and newt in the same sample be even MORE remarkable? I'm not trying to be obtuse here. I was a political science major, which is as close as I got to biological science.