And lets now list the assumptions you've weighed into.
1. None of these beasts was water going.
2. None of these were extinct by that time.
3. All of these were not extinct by that time.
4. Unknown factors.
The flood story is not a point by point recollection of everything Noah did. It's a general story that shows the high points and tells what needs to be relayed as opposed to showing every detail down to how many times noah cut himself and how much manuer got shoveled over the side.
It is a story told in 260 cultures if memory serves. It has more evidence for it and from more sources than are involved in a typical murder investigation and the details largely corraborate the guts of the story just about no matter what version is told. The variations are largely in the names. The central point of a global catastrophe exists in all the versions. And it is born out in the geological evidences. The only people discounting the story are people who don't want to admit it could be true. It isn't that there is no evidence, the evidence is there. It's that people of an ideological bent have decided they not only don't believe it, they won't even consider it.
A boat the length of a football stadium and several stories tall would house the animals of the time. No problem. It was a survival mission - not a trip to a luxury resort. The same people who try to argue against this do so in the face of modern aircraft carriers with less capacity that house 3500+ people, A volume of fuel that a wooden boat wouldn't need, Food for the crew for a 6 month tour. Aircraft, emergency vehicles, a power plant several stories tall...
1. None of these beasts was water going.
2. None of these were extinct by that time.
3. All of these were not extinct by that time.
4. Unknown factors.
1. I do not believe that the water displacement of the sauropods(some of which were > 70 tons) would allow them to be bouyant.
2. If they weren't extinct, you would think that some of these 260 cultures would mention dinosuars. Wouldn't you?
3. Great, lets assume they were all extinct. So based on post #123, all dinosaurs had to have lived within a couple of hundred years.
4. Unknown factors like the dinosaurs really died off millions of years before Noah was born. I'd say that is a likely factor.
I'm only agruing this from the persective that Earth is far older than 6K years old. I do not believe Noah carried any dino's.