A submethod within biostratigraphy is faunal association: Sometimes researchers can determine a rough age for a fossil based on established ages of other fauna from the same layer — especially microfauna, which evolve faster, creating shorter spans in the fossil record for each species.Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) spectroscopy is a method for studying materials with unpaired electrons.On top of that it is said that orienting that accurate is not such a big thing. The point is that the widely accepted theories are based on false assumptions and wrong ideas, and therefore must be labeled as the work of amateurs.It is this work of amateurs that has become the standard – a believe system.
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The good dates are confirmed using at least two different methods, ideally involving multiple independent labs for each method to cross-check results.
Sometimes only one method is possible, reducing the confidence researchers have in the results. “They’re based on ‘it’s that old because I say so,’ a popular approach by some of my older colleagues,” says Shea, laughing, “though I find I like it myself as I get more gray hair.” Kidding aside, dating a find is crucial for understanding its significance and relation to other fossils or artifacts.