. Guide leaflet. -So_- By HENRY FAIRFIELD OSBORN Revised IrJ WILLIAM K. GREGORY and GEORGE PINKLEY GEOLOGICTIME TIMEIN YEARS Determined by thedisintegration ofradioactive minerals STRUCTURALSTAGES DOMINANTLIFE RecentPleistocenePlioceneMioceneOlkjoceneEocene^PaleoceneCretaceous (Upper Cretaceous] Comanchean (Lower Cretaceous) JurassicTriassicPermianPennsylvanian (Up. Carboniferous] Mississippian () DevonianSilurianOrdovicianCambrian Pre- Cambrian Time ?l,000,000 60,000,000 135,000,000180,000,000 450,000,000550,000,000 i YEARS i Modern man t Primitive man t Man-like
. Guide leaflet. -So_- By HENRY FAIRFIELD OSBORN Revised IrJ WILLIAM K. GREGORY and GEORGE PINKLEY GEOLOGICTIME TIMEIN YEARS Determined by thedisintegration ofradioactive minerals STRUCTURALSTAGES DOMINANTLIFE RecentPleistocenePlioceneMioceneOlkjoceneEocene^PaleoceneCretaceous (Upper Cretaceous] Comanchean (Lower Cretaceous) JurassicTriassicPermianPennsylvanian (Up. Carboniferous] Mississippian () DevonianSilurianOrdovicianCambrian Pre- Cambrian Time ?l,000,000 60,000,000 135,000,000180,000,000 450,000,000550,000,000 i YEARS i Modern man t Primitive man t Man-like apes I First anthropoids f First primates(Lemuroids&Tarsioids) AGE OF MAN AGE OFMAMMALS § o COuJ 2 Early plasectivorouj First mJ 1 cental in-> mammals ammals F. ... AGE OFREPTILES O 0 NOUJ< < Mammal-likereptiles T Primitive reptiles t First amphibiansFirst true fishes t Earliest fish-like vertebrates(Ostracoderms) tUnknown invertebrate ancestry of the AGE OFAMPHIBIANS AGE OFFISHES AGE OF INVERTEBRA
Size: 1521px × 1644px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
