Predicting that certain objects sharing similar characterics will be found is science? Hardly. For evolution theory to hold water it must predict and observe the process whereby those creatures derived from one another. Please do not mistake the observation of data with the process whereby the data emerged.
Why not? Especially when the technology didn't exist at the time to understand the why's. Now we are finally getting there with genetic manipulation. Of course, when scientists show that changing genes from A->B results in significant morphological changes, the creationists just scream ID, which is extremely specious on their part, don't you think?
Actually, making predictions and finding out if these predictions are true is the very essence of science. I suggest you do some reading about what makes an idea scientific before you start arguing these issues. You do not get to make up your own definition of science, you know.