They did, yes, but I don't think they'd planned to. That is, I don't think Ambrose and her father had planned out fully what to do (curse these pronouns).

And it may just have been me, but while the Silurian scientist came through on the side of peaceful cooperation eventually, I found his description of regularly taking specimens to examine for the last few hundred years, and keeping the young in suspended animation... just a bit creepy.