The saureans you have listed were most likely merely varieties of an original Kind, only two of which would have been taken on the ark, and not necessarily the largest specimens either, or necessarily full grown. Much of what is today called a "species" is in other words most likely just a variety of the original Kind.
There is absolutely no doubt that the dinosaur fossils are evidence of the flood as in fact all the fossils over the earth are evidence of the flood. Such an event, causing rapid burial of intact creatures, is the only way the conditions for such preservation could have occurred. Some of the dinosaur beds show great numbers of them all piled up together as if washed into their grave by one great rush of water.
How exactly were so many species of dinosaurs "washed into their grave" if the only one around was the one "original kind"?
Or maybe the one "kind" somehow turned into all other "kindes" and then another flood came and buried them all but did not bury any animals that would be considered "modern"?
I'm unclear how many animals were still vegetarian at the time of the ark, although perhaps a vegetarian variety of dino was taken on the ark.
So how many "kindes" were there? And how exactly does a predator, that is so "inteligently designed" (even by god) survive on vegitables?
I read on one creationist site recently that it is very likely most of the animals on the ark went into a state of dormancy or torpor, like hibernation, or a similar condition that occurs in some animals in hot weather that I can't remember the name of, and that this state of torpor may also occur under conditions of food deprivation.
Can you give a link to this site?