"The central part of the "Nessie" bone was discovered in Spitzer Space Telescope data in 2010 by James Jackson (Boston University), who named it after the Loch Ness Monster."

I remember seeing this work posted on arXiv in 2010; the discovery paper is available here: http://arxiv.org/abs/1007.5492

An infrared view of the extended Nessie Nebula is available here: http://mpia.de/~r...nded.jpg

Computer simulations of galaxy formation show webs of filaments within spiral disks. It is very likely that the newly discovered Milky Way feature is one of these "bone-like" filaments.

Unfortunately, the simulations are based on a theorectical model with very little basis in reality. No one has any experience of the formation of any galaxy since no one was around to record how any galaxy came into existence.
Therefore, the model used here is based on pure speculation of how galaxies MIGHT have formed.
One tiny little problem, for instance, would be how to account for the existence of galactic magnetic fields.

How did that arise, given the inability of the currently accepted model to account for just that small, insignificant thorn in the flesh?

Never mind the other small thorn of how the first star came into being in the first place, all by itself.