Work on Cores
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Work on Cores |
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These microfossils are frequently picked and counted from a tray of many other similar fossils in the sediment. Can you see the difference between "left" coiling and "right" coiling"? The scientific importance of the difference is the appearance and disappearance of either left or right coiling "pachy" indicates a difference in the water temperature. |
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Neogloboquadrina pachyderma (left coiling) [affectionately called "N. pachy left"], magnified at 400x. "N. pachy left" is a foraminifera that loves polar-like waters and is found today off east Greenland where summer temperatures are cold. |
Neogloboquadrina pachyderma (right coiling) [affectionately called "N. pachy right], magnified at 400x. This "right coiling" N. pachyderma favors warm-water. |
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