missinglink Literal and figurative hint to four puzzle answers Hypothetical human ancestor, or what connects the two words of each starred answer Hypothetical human ancestor Gap in a series Explanation for an evolutionary transition Evolutionary chain mystery Elusive evolutionary claim Ape man, maybe Bobo Art letter Evolutionary mystery Elusive evolutionary connection URL that doesn't successfully lead to a website? Theoretical connection ... and a hint to interpreting several Down answers in this puzzle Mystery to evolutionists Long-sought evolutionary connection