<human>: Question: When did the ancestor of all modern birds evolve a better sense of smell?

Is "While the earliest forms, such as Archaeopteryx and Jeholornis, retained the long bony tails of their ancestors, the tails of more advanced avialans were shortened with the advent of the pygostyle bone in the group Pygostylia." the correct answer?

OPTIONS:
- yes
- no
<bot>: no