If you want to see concrete evidence of evolution, look no further than your hand or your foot. Five fingers, five toes. There's nothing magical about the number, yet five digits at the end of ...

So at this point in time, experimentation was going on in being a tetrapod. What kinds of things could you do with these new limblike fins or limbs, if you want to call them limbs? What could you ...

That resulted in extra limbs and no true external genitalia ... implications in the evolution of the hindlimb/genital area of tetrapods and identifies an additional mechanism for Tgfbr1 ...

A major event in vertebrate evolution was the transition from aquatic to terrestrial life, made possible by the emergence of ...

While most scientists suspect this transition was spurred by the evolution of fins to limbs, it may have been changes in the ... while investigating the fossilized skulls of 59 fish, tetrapod, and ...