I don't need to say much anymore....
Anyways, dinasours, there is a dinasour(or a dragon, which you asked too. I am still unsure what it describes, but has to be one of the two) described in Job 41.
Dinasour bones have been found with bloodcells in them.
Bloodcells only last a couple of thousand of years... Not millions and millions of years.
Unicorns: Unicorns are a myth invented by the fisherman of some villages somewhere on the world.
You see there is this fish, the narwal, that has a nice long spiraled horn. these horns would occasionally get dropped on the land by the sea somewhow. And the people invented the myth of the unicorn out of it.
Germs and diseases:
The bible clearly states that there were no diseases before the fall of mankind.
Diseases came when adam and eve ate from the tree. Disease is a result from sin.
It is because the world was corrupted by sin that disease came into existance. As an punishment for the world.
That's all I have to say
Michael