Digital Pictures of Microfossils

What Is It?
   These  pictures are of a (micro-insect or plankton) fossilized leg with two small claws at the apex. One of the claws is longer than the other one. I have been looking for any reference on it, but nothing yet.
Enjoy...

Micro-insect or plankton leg limb?

Micro-insect or plankton limb(fossilized).

Micro-insect or plankton leg limb(fossilized)

Micro-insect or plankton leg limb(fossilized).

Updated On The Microspheres/Microorganisms.
 On the microspheres pictures that I took earlier (see post 4/20/2010) seen to be  or could be eggs shells. After  the microorganism   comes out.   The shells are transparent.  These new pictures come from a new rock
sample and view how the shell are splits open (Fig.2, 3,4,5  ).
  There are a few red microspheres on this rock sample next to the ones that are empty (Fig. 1).
I, also, took  pictures on an area that shows a molting shell of a very small organism and I
was able to see  outlines of a microorganism small limbs.(Fig. 6&7).

If, I am able to see what comes out . I will take pictures of them.  Right now I'm thinking they could be red mites.  Just have to wait and see what they are.

Scale ref:     1mm lens reticle at 100x     

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7