Ring species are most certainly anomalies.
These supposed new species only occur when they are isolated which results in a reduction of genetic diversity. If this is the example of what happened for every species then every species would have reached a point where reproduction is not possible at all and species today would be less complex than the single celled organisms we developed from according to evolution.
If this is your definitive evidence then we more biologically advanced in the past.
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No, all that ring species show is that one organism can change into another one, ring species are just a very specific example.