Couldn't find if this had already been mentioned anywhere, but I chanced upon 
Katsuta Kyohei's web site while looking for some other stuff.  He's got some simply amazing, unpublished (as far as I know -- please correct me if I'm wrong!) models, including some organisms I've never seen tackled before, like a tardigrade:
...and a 
Dicranurus trilobite:
There's also an amazing new 3D owl that I absolutely love:

.
Go have a look around the site!