They were anxious to put as many genera between us and ape
as possible; so each new jaw-bone, each different skull,
each new femur became a new genus.
Gradually then, all these rungs were being discovered.
Then someone said " Hey, where’s the cut-off !"
No one knew, it hadn't been discovered,
or had but wasn't recognized.
So we're still waiting for him who'll come to announce:
"Hallelujah, this is The Bone,
the One that'll divide the fossil record into b.b. and a.b.
(before and after bone).”