"When the Flood was over Noah opened the Ark’s big door and let the animals free. Babies were born to each set of parents. After many years, the earth began to be filled with animals again.
"The dinosaurs lived for at least a few centuries after the Flood, but probably never in the great numbers that there once had been. No one knows exactly when they finally died out."
David Weinberger talks about phenomena such as this in his book Too Big To Know.
http://christiananswers.net/dinosaurs/j-fate1.html
"After the Flood what happened to dinosaurs?
"When the Flood was over Noah opened the Ark’s big door and let the animals free. Babies were born to each set of parents. After many years, the earth began to be filled with animals again.
"The dinosaurs lived for at least a few centuries after the Flood, but probably never in the great numbers that there once had been. No one knows exactly when they finally died out."
David Weinberger talks about phenomena such as this in his book Too Big To Know.