Being unable to measure ontogenetic depth is not good news for evolutionary theory.
Darwin himself realized that any kind of significant saltational change would imply a miracle-like intelligent intervention.
Chances are, we’ve all attended a lecture, a conference, or some other event that was said to be “critical,” “momentous,” or even “life-changing.”
In a word, they are unresponsive.
As in all other disciplines within the life sciences, embryonic development is not complying with evolutionary theory.