After sorting out my tech difficulties (skill issue, not game design), I can say that the game is as charming as it looks.
The art style is good at balancing a variety of factors. It is adorable, it is detailed enough to convey the fossils as stone remembering bone, and is simple enough to be pleasant while doing both. There are a few main themes for decorating your museum that mix and match quite well. And, again, these add to the experience without being distracting. Very well done.
The music is pleasant but unobtrusive.
The gameplay was fun. Describing why things are fun is not my strong point, but it worked for me. Perhaps as important is how delightfully intuitive it is. No tutorials and minimal popups, but easy to play anyway. I tend to do poorly at games without in-game tutorials, but I only made one mistake when I started playing. And that only a very minor one. I would call this very good design.
I quite enjoyed putting the dinosaurs together. Neither of mine were complete, as it is a bit late for playing through more than one dig site, but it settled the part of my brain that is always looking for a nice, low-pressure puzzle.
I like the writeups about the dinosaurs. I only played through one dig site, so I'm not sure how many dinosaurs are currently in the game, but it was fun to read about the history of paleontology. For both of them. And obviously learning about dinosaurs is always fun.
A very good game on the whole. My only problem is both small and might have been my fault. I struggled to find a way to exit the game once it was running. There didn't seem to be any button for it, and neither the escape key nor any of the letters provided an exit option. Needing to pull up the task bar to manually close the window to exit a game is not my preference. I did go back and double check that I hadn't missed an instruction on the starting menu and loading screen. Still, this is a very minor issue and as it is late and I am bad at tech may well be my fault.
On the whole, a very pleasant game. I look forward to playing again and to seeing it expand.