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News Release 09-188
Climate Change Triggered Dwarfism in Soil-Dwelling Creatures of the Past
Ancient soil biota decreased in size by up to 46 percent during period 55 million years ago
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Thick red rocks mark an ancient time in the Bighorn Basin near Worland, Wyoming.
Credit: Steve Hasiotis and Jon Smith
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This now-filled-in burrow was created by beetle larvae and other soil biota.
Credit: Steve Hasiotis and Jon Smith
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A rock in the Willwood Formation in Wyoming shows a former crayfish burrow.
Credit: Steve Hasiotis and Jon Smith
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A fossil crayfish is shown next to a modern crayfish.
Credit: Steve Hasiotis and Jon Smith
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