The final volume of the original collections by Kitchen Sink Press. There would be two more issues of the comic, Xenozoic Tales, published after this volume, but they would not complete the story, and that's all there have been to date.
Ironically, it would have been less annoying to have ended after the second volume. Everything in those first two volumes are stand alone stories with only a light overall plot, but this volume begins with major changes to the status quo and ends with those changes unresolved.
We do get to see a little more of Hannah's tribe, the Wassoon, and the stories are not bad. It's just frustrating to not get an actual ending. I would be tempted to get the latest compilation volume that includes all of Mark Schultz' work from the Xenozoic tales in one volume, if I thought it would resolve anything, but it's hard to justify the cost for just two stories that don't.
I am sorry for those who just get that volume though, as they reportedly don't contain the stories drawn by Steve Stiles, and they are good stories.