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Press Release 10-143
Discovery of Possible Earliest Animal Life Pushes Back Fossil Record
Primitive sponge-like creatures lived in ocean reefs 650 million years ago
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Stromatolite column of bacterial mats in Australia; sponge fossils are between stromatolites.
Credit: Adam Maloof |
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Looking east from a low-flying plane over the Little Bunkers Ranges in South Australia.
Credit: Catherine Rose |
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Below a cliff, a reddish bed is one of many stromatolite bioherms containing fossil sponges.
Credit: Adam Maloof |
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Researchers Laura Poppick and Blake Dyer hike down a stromatolite reef in South Australia.
Credit: Adam Maloof |
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Image of limestone rock containing fossils; fossil of interest is highlighted in blue using automated image tracing software. The serial grinding process created nearly 500 such images that the scientists stacked and autotraced to create a 3-D model.
Credit: Maloof Lab/Situ Studio |
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Red autotraced forms from 15 slices through rock; the shape of a single fossil changes.
Credit: Situ Studio |
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Stacking autotraced rock sections results in this image; the elliptical fossil is clearly visible.
Credit: Situ Studio |
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The stratigraphic section where the fossil sponges were discovered may be seen in this image.
Credit: Adam Maloof |
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View of the Trezona Formation in the West Central Flinders Ranges, South Australia.
Credit: Adam Maloof |
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