Mind-Benders of Greek & Roman History
He Saw Seashells on Mountains and Deduced the Sea Once Covered the Land
In the 6th-5th century BCE Xenophanes of Colophon noticed fossil shells and the imprints of sea creatures embedded high in inland rock, and concluded that the land there had once lain under water. He read fossils as evidence of the Earth's history more than two thousand years before geology existed as a science.
How we know
Xenophanes c.570-478 BCE. Ancient reports (via Hippolytus) say he observed fossil shells and fish impressions inland and inferred past submersion; cited as the earliest known use of fossils as evidence for Earth's history. Modern stratigraphic geology: 18th-19th c. CE.
One of many fact-checked wonders across eight traditions at The Spring of Wisdom.