What scientific experiments have been invalidated by extinction phenomena?

[mtworkowski@o]

what experiments, if any, have been invalidated by the extinction phenomena.

 

[humanino]

I do not think your question as stated is very understandable.
The first thing I don't understand is what you mean by "invalidate an experiment" ?
An experiment which has been correctly done is merely an observation of Nature and can not be invalidated, unless it has been done wrongly.

http://wordnet.princeton.edu/perl/webwn?s=valid

well grounded in logic or truth or having legal force, or still legally acceptable

You can invalidate an interpretation, but not an experiment.

you mean optical extinction ?