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Home » Guide » Arthropods (Arthropoda) » Unidentified Tracks, Sign, and Other Mysteries » Unidentified Coverings, Cases, Retreats and Nests
Photo#929736
Dirt balls
Copyright © 2014 Peter Pearson

Dirt balls
Orinda, Contra Costa County, California, USA
May 31, 2014
Size: diameter 5-6 mm
Hundreds of these smooth, hard, precisely spherical dirt balls lay on the ground under a board, with many attached to the underside of the board. The board lay in an oak/bay wood 10m from a stream. When broken open with a knife, they reveal a central hollow containing a tiny white lump.
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Contributed by Peter Pearson on 1 June, 2014 - 12:42pm
Last updated 9 August, 2014 - 6:17pm

Moved
Moved from ID Request.
… john and jane balaban, 9 August, 2014 - 6:17pm login or register to post comments

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