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After the glacial period, the ocean temperature rose and the ice volume returned to is earlier lower amount.

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Eiler also explains that the volume of ice in the north and south poles expanded.

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Eiler explained that during the late ordovician the tempetares of tropical oceans were higher than they are today. but only for a short amount of time. the ocean had experienced drop in temperature by 5 degrees

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Fischer said that these species went extinct during the Late Ordovician Period. These were organisms such as trilobites and brachiopods. Paleozoic corals and cephalopods, which Fisher described as resembling "squids in a tube," were also impacted as well. these speces wereaffected in the global temperature changes.

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Fossils and shells are required for this method said Fischer.

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John has discovered a new method on how to determine the temperature of the ocean by examining the isotopes in the fossils that were from the late Ordovician period.

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Links are being made to help solve this mystery.

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Links are being made to help solve this mystery.

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The Caltech is discovering links between the climate change and the late Ordovician mass extinction. Was occurred during a glacial period when the temperature dropped and the volume of the ice increased.

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They are finding new ways to find out the temperatures of the ancient times.

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Made the climate to cold for the plants and animals.