[identity profile] songster.livejournal.com 2012-05-20 09:38 pm (UTC)(link)
Depends which species of Smilodon: they ranged from half the size of Bullockornis to twice its size, according to Wikipedia at least.
ext_8707: Taken in front of Carnegie Hall (mesna)

[identity profile] ronebofh.livejournal.com 2012-05-22 05:06 am (UTC)(link)
Agreed, but i think Bulluckornis takes the lower two out, so i went with that.