History6th century BCAncient Greecelow confidence

Paleontological observations date back to at least the 6th century BC.

Notes on verification

Corroborated by multiple independent sources including Wikipedia's Timeline of paleontology and History of paleontology articles, and Grokipedia, all citing Xenophanes of Colophon's 6th century BC observations of marine fossils. [tier=unverified indep_score=0.375 clusters=1 claim_tier=notable] [harvest 2026-09-15: +4 source(s) on new hosts; tier unverified->silver indep=0.875 clusters=4] [kind-backfill 2026-09-15: kind=empirical eligibility=high]

Sources