No longer can you lay claim to being the oldest creature on the human branch of the primate family tree.
Until two years ago, Lucy was the earliest known skeleton from the human branch of the primate family.
The next-highest branch, around eight million years ago, leads to the gorilla; then, six million years ago, the human branch.
Ida was exciting because of her lack of lemur-like physical characteristics – no fused teeth in the middle of her lower jawbone, no grooming claw – suggesting she was from the newly developed "human branch" of primates.
A Yali man of West Papua is photographed so that he becomes one with the tree he is climbing, an excrutiatingly tricky shot, given the angle, but which turns him into a human branch.
The Ancestor's Tale (2004), structured after Geoffrey Chaucer's The Canterbury Tales, traced the human branch of the phylogenetic tree back to points where it converges with the evolution of other species.
By replacing Lucy as the earliest known skeleton from the human branch of the primate family tree, the scientists said, Ardi opened a window to "the early evolutionary steps that our ancestors took after we diverged from our common ancestor with chimpanzees".
The vagaries of and controversies over biological classification help explain some of the frequent name and relationship changes on the human branch of the tree of life.
By this point in history, the human branch of the evolutionary tree would have already separated from the Asian apes, which have the less effective ADH4, Benefit explains.
Likewise, chimp indels are more strongly correlated with single nucleotide changes on the chimp branch than with any such events on the human branch.
A fixed indel difference can be classified into one of four categories; 1) an insertion on the human branch, 2) a deletion on the human branch, 3) an insertion on the chimpanzee branch, and 4) a deletion on the chimpanzee branch.
