CHRTC350 Lecture Notes - Lecture 9: Agnatha, Geologic Time Scale, Gnathostomata
25 Feb 2020
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Animals: s2 h14 one-cell organisms multi-cell organisms soft-bodied marine animals marine animals with skeletons jawless fish jawed fish amphibians reptiles mammal-like reptiles mammals primates pre-humans humans. Global flood prediction: s3 mixing of fossils & no evolutionary pattern. Not one fossil plant or fossil animal in the earth"s crust has been found that is outside this evolutionary pattern in the geological column. Eg humans never in strata before dinosaurs: radiometric dating s5. Basic principle s6 by measuring the amount change in a natural process, the amount time this process has been going on can be determined. Tip: think of burning candles a short candle indicates it has been burning for more time than a long candle. Def: unstable (parent) atoms that naturally change (decay) into more stable (daughter) atoms. C age of an object can be determined by comparing the amount parent atoms to daughter atoms.
