WITH what interest do we look upon any relic of early human history ! The monument that tells of a civilization whose hieroglyphic records we cannot even decipher, the slightest trace of a nation that ...
Graptolites show us how unpredictable the Silurian period really could be. What graptolites tell us is a story of incredible changes in the ocean, of periods where the oceans became poisonous and ...
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