Question

Scientists have studied the fossilized shells of prehistoric, single-celled marine organisms. Some of these shells were thin, which
indicates that the organisms lived in very warm ocean water. Such evidence indicates that the climate during this time may have been
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Answer 1

Most probably that the world was much warmer during this time period. Regardless of waters high specific heat, most likely if marine specimens from a wide range of areas across the planet were to show the same results, it proves it isn’t a specific area rather that the entire climate was much warmer.