Bill Bryson Quote

Nowadays, and speaking very generally, geological time is divided first into four great chunks known as eras: Precambrian, Palaeozoic (from the Greek meaning old life), Mesozoic (middle life) and Cenozoic (recent life). These four eras are further divided into anywhere from a dozen to twenty subgroups,

Bill Bryson

Nowadays, and speaking very generally, geological time is divided first into four great chunks known as eras: Precambrian, Palaeozoic (from the Greek meaning old life), Mesozoic (middle life) and Cenozoic (recent life). These four eras are further divided into anywhere from a dozen to twenty subgroups,

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