I had heard that small spheroids had been found, but in the absence of details I assumed volcanic glass like on the moon. These don't strike me as similar to the lunar spheroids, but I'm no expert. They could also be crystals that form in-situ, perhaps even carbonates. I think any liquid particles at microscopic scales would be ellipsoidal or spheroidal, this could account for the shapes, before the water evaporated out of the structure. I think it premature to speculate on a biological explantion. On the other hand, forget plants. These are obviously just the droppings of a higher form of life... C. __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html