the geological time scale

Presented by Mohammed Inzamamuddin M.Sc 1st semester CCC ENV103 Dep. of Environmental science Sarguja university ambikapur

The Geological Time scale

The Geological Time scale

GEOLOGICAL TIME SCALE

भूवैज्ञानि�क समय-मा�EONS इओ�

EPOCHयुग

PERIOD कल्प

ERA महाकल्प

Cenozoic Era नूतनजीवी महाकल्प

स्त�पायी जंतुओं एवं मा�व का काल

Mesozoic Eraमध्यजीवी महाकल्प

सरीसृपों का काल

Paleozoic Era पुराजीवी महाकल्प

अकशेरुकीय तथा आदि(म कशेरुकीय जंतुओं का काल

Pre-Cambrianकैं ब्रि�यनपूव�

ERA महाकल्पCONTENT

Pre-Cambrian(4600mya)

Paleozoic Era (540-248mya)अकशेरुकीय तथा आदि(म कशेरुकीय जंतुओं का काल

PERIOD कल्प

Cambrian 540mya

Ordovician 490mya

Silurian 443mya

Devonian 417mya

Missippian 354mya

Permian 290mya

Silurian

443mya

First land plants

Cambrian 540mya

Explosion of lifeOrdovician

490mya

The 1st animals with bones appear

A very cold time in Earth’s history

Devonian 417mya

Age of the Fish

Missippian 354mya

First seed plants appear

Permian 290mya

Last period of the Paleozoic

Pangea forms. Reptiles spread across continents

Mesozoic Era (248-66mya)“Age of reptiles”

Triassic (248mya)

Jurassic (206mya)

Cretaceous

(144mya)

Triassic (248mya)

First dinosaurs appear

First mammals- small rodents appear

Jurassic (206mya)

First birds appearGolden age of

dinosaurs

Cretaceous (144-66mya)

First flowering plants

First flowering plants

Cenozoic (66-0.01mya)

“Age of mammals”

Tertiary (66-53mya)

Quaternary(1.8-0.01mya)

Tertiary (66-53mya)

First horses appear

Dogs and cats apes appear

elephants and other large mammals develop

Quaternary(1.8-0.01mya)

Modern humans develop and ice sheets are predominant-

Ice age

Humans flourish

Reference OXFORD UNIVERSITY PPT

AUTHOR BY James Kenny

Same website address

http://dinosaurs.about.com/od/otherprehistoriclife/a/earlymammals.htm

https://www.google.co.in/search?q=First+horses+appear+and+tropical+plants+dominate&es_sm=93&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAWoVChMIhsTxi-G1yAIVTo-OCh0BgASK#imgrc=LWRzWtRimEsTFM%3A

http://www.pbs.org/wgbh/nova/evolution/cooperative-apes.htmlhttp://hubpages.com/hub/Life-In-Ice-Age-Europe-The-Mammoth-Journey