| Neogloboquadrina pachyderma (left coiling) [affectionately called "N. pachy left"], magnified at 400x.
This microfossil is frequently picked, and counted from a tray of many other similar fossils in the sediment. "N. pachy left" is a foraminifera that loves polar-like waters and is found today off east Greenland where summer temperatures are cold.
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| Neogloboquadrina pachyderma (right coiling) [affectionately called "N. pachy right], magnified at 400x.
This "right coiling" N. pachyderma is sometimes counted. Can you see the difference between "left" coiling as shown above and "right" coiling"? The scientific importance of the difference is that right coiling "N. pachy" favor warm-water, thus the appearance and disappearance of either left or right indicate a difference in the water temperature. |
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For more information, contact Rusty Lotti Bond (curator@ldeo.columbia.edu). Comments are welcomed. Last update of this page was July 18, 2000.
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