( Audiopedia
2014 youTUBE video    9:15 )

Paleozoic

-----------------------------------
( Audiopedia
2015 youTUBE video    16:37 )

Devonian

-----------------------------------
( Geological Society
2018 youTUBE video    15:44 )

Lyell 2018: The Devonian mass extinction: new geochemical and geochronicalogical insights

-----------------------------------
( Geological Society
2018 youTUBE video    16:07 )

Lyell 2018: The Terrestrial Record of the End Devonian Mass Extinction Event

-----------------------------------
( PBS Eons
2018 youTUBE video    11:57 )

From the Cambrian Explosion to the Great Dying

-----------------------------------
( Audiopedia
2014 youTUBE video    11:31 )

Precambrian

-----------------------------------
( Audiopedia
2015 youTUBE video    7:47 )

Proterozoic

-----------------------------------
( DCC - Geology Online
2014 youTUBE video    4:13 )

Historical Geology: Early Paleozoic, geologic time

-----------------------------------
( DCC - Geology Online
2014 youTUBE video    6:23 )

Historical Geology: Early Paleozoic, sloss sequence

-----------------------------------
( DCC - Geology Online
2017 youTUBE video    7:19 )

Historical Geology, Archean, rocks & early life

-----------------------------------
( DCC - Geology Online
2017 youTUBE video    12:29 )

Historical Geology, Archean, differentiation, early processes

-----------------------------------
( DCC - Geology Online
2017 youTUBE video    9:22 )

Historical geology, Archean, oceans, atmosphere


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