Believe me, it can be just as hard to tell when you're eyeball to eyeball with it.
We've tried to combat this problem by using arrows, text on the image and sometimes ridiculously detailed (but hopefully vivid) descriptions. Dr. Bakker's just sent an image that helps make the leap from just-a-rock to living creature:
They've also uncovered what looks like another full fin spine. Since they are digging from the bottom of the layer towards what was the surface, it's a very nice surprise to find so many associated fossils.
You can see the spine running along the bottom of this image, parallel to the measuring tape. To the right of the image, the spine looks as though it continues under the dirt. Continued excavation with help determine how much of this spine has been preserved.
Technorati tags: museum, fossil, paleontology