Fig. 3. —Idealised diagram illustrating migration of a depth- and temperature-controlled species A during a period of cooling. Latitudes and temperatures approximately as for New Zealand at the present day. The species migrates northward within its restricted depth range, indicated by the horizontal broken lines. At latitude X it is absent at time 1, occurs only in deep water at time 2, and occurs only in relatively shallow water at time 3.
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Transactions of the Royal Society of New Zealand : Geology, Volume 1, Issue 12, 26 August 1962, Page 187
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72Fig. 3.—Idealised diagram illustrating migration of a depth- and temperature-controlled species A during a period of cooling. Latitudes and temperatures approximately as for New Zealand at the present day. The species migrates northward within its restricted depth range, indicated by the horizontal broken lines. At latitude X it is absent at time 1, occurs only in deep water at time 2, and occurs only in relatively shallow water at time 3. Transactions of the Royal Society of New Zealand : Geology, Volume 1, Issue 12, 26 August 1962, Page 187
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