Scientists have discovered the oldest-known fossil of a tadpole, dating back approximately 161 million years to the Middle Jurassic period Scientists have discovered the oldest-known fossil of a ...
Evolution, Vol. 75, No. 12 (DECEMBER 2021), pp. 3203-3213 (11 pages) Dollo’s law of irreversibility states that once a complex structure is lost, it cannot be regained in the same form. Several ...
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