Documents 1Harry Williams, Historical Geology1 HISTORICAL GEOLOGY LECTURE 8. EARLY PALEOZOIC GEOLOGY I....

Slide 1 1Harry Williams, Historical Geology1 HISTORICAL GEOLOGY LECTURE 8. EARLY PALEOZOIC GEOLOGY I. Introduction The Paleozoic is long – 7 periods covering almost 300…

Documents 8020–8024 | PNAS | May 14, 2013 | vol. 110 | no. 20 pnas/cgi/doi/10.1073/pnas.1221965110

* Harry Williams, Historical Geology * HISTORICAL GEOLOGY LECTURE 8. EARLY PALEOZOIC GEOLOGY I. Introduction The Paleozoic is long â 7 periods covering almost 300 million…