Question: Who was the first person to use fossils for dating rock layers?
Answer: William Smith
Disambiguated annotations:
qaPairs: question: Who was the first person to use fossils for dating rock layers theoretically?
answer: Nicolaus Stenonius
Niels Steensen
Nicolaus Steno
Nicholas Steno
question: Who was the first person to use fossils for dating rock layers in large-scale practical application?
answer: William Smith
William 'Strata' Smith