A Brief History of Geologic Time

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here:

By looking at the layers beneath our feet, geologists have been able to identify and describe crucial episodes in life’s history. These key events frame the chapters in the story of life on earth and the system we use to bind all these chapters together is the Geologic Time Scale.

Thanks to Studio 252mya for their illustrations. You can find more of their work here:

Produced in collaboration with PBS Digital Studios:

Want to follow Eons elsewhere on the internet?
Facebook -
Twitter -
Instagram -

References:
































Steno, N. (1916). 1669: De solido intra solidum naturaliter contento dissertationis prodromus. Florence, 78p.
Hancock, Paul L; Skinner, Brian J, Oxford Companion to the Earth, Oxford University Press, 2000

Addition to image credits: some footage from this episode is from VideoBlocks.com

dinosaurs,dinos,paleo,paleontology,scishow,eons,pbs,pbs digital studios,hank green,john green,complexly,fossils,natural history,Geologic Time Scale,stratigraphy,strata,Eons,Eras,Periods,Epochs,Ages,Hadean,Archean,cyanobacteria,Proterozoic,Eukaryotes,Phanerozoic,Pangea,the Great Dying,Mesozoic,Cretaceous-Paleogene,Cenozoic,Extinction Event,The Cambrian explosion,trilobites,