Because that's not what the Bible says.
really? how do you figure such?
Where in the Bible, Care, is there anything about God creating Dinosaurs or Woolly Mammoths or anything other than the animals that currently exist (excepting the ones which have since, after the writing of the Bible, gone extinct)?
where in the Bible does it say He did not?
It says all animals and creatures were created out of the dust of the earth...there is nothing that leaves out Dinosaurs, why would they be left out? They are NOT left out of the Bible, they are included with all animals and creatures in the Genesis story of creation?
the only thing that is not understood is the term ''day'' that is used in the Bible, and there is an out for that in the Bible that teaches us that TIME in God's time, is not the same as what we see as time in a day....it says something like a day in god's time could be a thousand years to us....this is metaphor on how we can not comprehend the Time that God lives in...which can be accepted, even in scientific terms.....where time is not time alone, but SPACE/TIME...
care