If i understand correctly and we're discussing the starting points and stuff then I just want to put in my thoughts, (If that's no problem)
So starting points, I prefer it if we have the starting points of the map Ducky123 made, this would give us time to somewhat develop our characters and finally fit them together.
When did the Tsunami happen? Within a couple days before we begin writing the RP. Or during, both are fine by me.
How far away is the oasis? Pretty far, definitely not within a couple days of traveling (depending on species of course, some are faster than others) so for a normal dinosaur around 7-10 days of traveling. It also depends on our starting points the further you are the longer it takes, the closer you are the less time it takes.
I hope this is good enough

The universe has a beginning, but no end. —Infinite.
The stars too have beginnings, but their power accompanies their decline. —Finite.
It the wise who are the most foolish. History has taught us as much.
The fish of the sea know not the world of the land. Were they to possess wisdom, they too would experience decline.
It is more absurd that humans should surpass the speed of light than it is that fish should start living on the land.
- Steins;Gate (anime / visual novel)