This "reverse 3D printing" analysis technique is brilliant!
Easy to understand in concept, but very clever. Even for terrestrial fossils, we're often limited by cautions about soft tissue or plant matter not being preserved. I hope these techniques are scalable and become widely available. Is it already? First I'd heard of it. Although it seems destructive, so there may be some fossils that are off limits.
Maybe I'm just in an impressionable and receptive mood this morning, but do they give awards for advances like this?
I'm pretty sure the fact that it's not merely damaging and potentially destructive (which is true for a lot of fossil preparation techniques), it's /completely/ destructive means it's not going to be a viable option in a lot of cases - once it's done, there's nothing else you can do with that specimen, it now only exists as the digitised data set. It's proven possible to revisit already prepared fossil specimens with newer techniques (typically newer imaging/scanning tech) and find new and often unexpected details; that's no longer possible once you've physically ground away the entire specimen.
And it's important to note that "damaging and potentially destructive" preparation of fossils historically has almost certainly resulted in masses of lost data regarding the soft tissue of prehistoric animals. Barring exceptional cases (things like lagerstatten, unusual marine sedimentation environments that produced things like the mudstone formations most famous for Lyme Regis, sudden burial events like the Burgess Shale), historically it almost never ocurred to people preparing fossil specimens that the various shadows and slight texture changes and the like surrounding the more obvious fossilised bones might actually be preserved soft tissue. Heck, never mind the soft tissue traces, even the bone itself was sometimes prepared away! More often the problem was things like fragile fossilised bone removed entirely from the surrounding matrix and then not stabilised sufficiently (or at all), leading to specimens literally crumbling into dust in museum vaults.
It's also worth noting that something like high-energy X-ray scans of the specimens might allow the same level of detail to be recovered non-destructively. The constraint there is normally the difficulty of getting access to such scans (this is the sort of process that needs something like a decent sized synchrotron to produce a sufficiently high energy beam), and the physical constraints on the volumes that can be scanned (typically quite small, a few tens of centimeters to a side). Even CAT scanning or regular X-ray imaging of fossils often runs into these issues - palaeontologists have been known to take specimens to vetinary colleges or zoos to make use of X-ray machines designed for large animals. But even in the worst case scenario, it may be considered a better option to simply chop up a large specimen so it can be scanned rather than to completely destroy it.
So yeah, this kind of processing of specimens is
extremely unlikely to become common. In fact, I wouldn't be surprised if the process was used more as an exploratory and experimental thing than anything else - using specimens that were considered low enough value that such a destructive process could be excused, as well as testing the quality of the data that was recovered and the practicality of the whole thing. Getting such a high value result from this research was probably as much a stroke of luck as anything else.
And make no mistake: this is a
very high value result, and specimens like the ones that were processed will now be considered
far more important than they used to be. Unless this proves to be the
only process that can usefully extract good data from them, it's unlikely that a whole lot more such specimens will suffer the same fate.