Reference Tables for Physical Setting/EARTH ... - Mrsciguy.com
Reference Tables for Physical Setting/EARTH ... - Mrsciguy.com
Reference Tables for Physical Setting/EARTH ... - Mrsciguy.com
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GEOLOGIC HISTORYEonMillion years ago050010002000300040004600PHANERO-ZOICPRECAMBRIANARCHEAN PROTEROZOICLATEMIDDLEEARLYMIDDLELATEEARLYFirstsexuallyreproducingorganismsEraOceanic oxygenbegins to enterthe atmosphereOceanic oxygenproduced bycyanobacteria<strong>com</strong>bines withiron, <strong>for</strong>mingiron oxide layerson ocean floorEarliest stromatolitesOldest microfossilsEvidence of biologicalcarbonOldest known rocksEstimated time of originof Earth and solar systemCENOZOICMESOZOICPALEOZOICQUATERNARYNEOGENEPALEOGENECRETACEOUSJURASSICTRIASSICPERMIANCARBONIF-EROUSPeriod Epoch Life on EarthPENNSYLVANIANMISSISSIPPIANDEVONIANSILURIANORDOVICIANCAMBRIANPLEISTOCENEPLIOCENELATEEARLYLATEMIDDLEEARLYLATEMIDDLEEARLYLATEMIDDLEEARLYLATEEARLYLATEMIDDLEEARLYLATEMIDDLEEARLYLATEEARLYLATEMIDDLEEARLYLATEMIDDLEEARLYMillion years agoHOLOCENE1.85.3MIOCENE23.0OLIGOCENE33.9EOCENE55.8PALEOCENE65.514620025129931835941644448854258000.01Humans, mastodonts, mammothsLarge carnivorous mammalsAbundant grazing mammalsEarliest grassesMany modern groups of mammalsMass extinction of dinosaurs, ammonoids, andmany land plantsEarliest flowering plantsDiverse bony fishesEarliest birdsAbundant dinosaurs and ammonoidsEarliest mammalsEarliest dinosaursMass extinction of many land and marineorganisms (including trilobites)Mammal-like reptilesAbundant reptilesExtensive coal-<strong>for</strong>ming <strong>for</strong>estsAbundant amphibiansLarge and numerous scale trees and seed ferns(vascular plants); earliest reptilesEarliest amphibians and plant seedsExtinction of many marine organismsEarth’s first <strong>for</strong>estsEarliest ammonoids and sharksAbundant fishEarliest insectsEarliest land plants and animalsAbundant eurypteridsInvertebrates dominantEarth’s first coral reefsBurgess shale fauna (diverse soft-bodied organisms)Earliest fishesExtinction of many primitive marine organismsEarliest trilobitesGreat diversity of life-<strong>for</strong>ms with shelly partsEdiacaran fauna (first multicellular, soft-bodiedmarine organisms)NY RockRecordSedimentBedrock(Index fossils not drawn to scale)1300Abundant stromatolitesABC D E F G H I J K L M NCryptolithus Valcouroceras Centroceras Eucalyptocrinus TetragraptusElliptocephala Phacops Hexameroceras Manticoceras CtenocrinusDicellograptusCoelophysis StylonurusEurypterus8 <strong>Physical</strong> <strong>Setting</strong>/Earth Science <strong>Reference</strong> <strong>Tables</strong> — 2010 Edition