There are about half a dozen or so examples of well preserved springtails (collembola). I understand that these are still quite common today but I personally have never seen a living example. Their small size does make them hard to spot. Though traditionally classified as insects, they are now considered to be noninsect members of the superclass "hexapoda", and in some ways they seem more closely allied with crustaceans. Fossil evidence suggests that they were around long before any group of true insects and are primarily rather than secondarily wingless.

At first glance this certainly appears to be a tiny spider. This is most striking when it is observed under superstage lighting through the stereo microscope. Unfortunaely, it is barely visible under these conditions and I found it impossible to get a decent image. The fact that it appears directly above part of the leg makes it difficult to get decent lighting and the casual observer could easily miss it while looking at the other inclusions.