Theory of evolution full of missing links

There seems to be a great deal of controversy about how we all came to be here. One idea is evolution--that all species evolved from a common ancestor.

In my science classes I taught the scientific method--that is, a hypothesis has to demonstrate its veracity with a reproducible experiment. Here's where evolution has a problem: There is no experiment to prove it. So we effectively have a fact-free theory widely accepted as gospel.

Yet even without proof, great leaps of logic are made to explain, for example, how birds evolved from dinosaurs. One of the best is the archeopteryx. Experts once claimed it to be a direct link.

Sorry, but the archeopteryx has been downgraded to a possible link. Another evolutionary proof was the eohippus, widely accepted by experts as the earliest ancestor of the horse family.

Sorry again. Eohippus was removed from that lineup. How can so many be so wrong for so long?

Literally dozens of experts have stated that there is no evidence of this. For brevity I offer only one: "The majority of major groups appear suddenly in the rocks, with virtually no evidence of transition from their ancestors." (Futuyma, D., Science on Trial: The Case for Evolution, 1983, p. 82)

However, lions and tigers can mate with each other to produce living offspring with characteristics of both parents. We call these hybrids.

A wolf and a coyote can together produce viable offspring. But a member of the dog family and one from the cat family cannot produce functional offspring. Like from like; no surprise.

My challenge to the believers: identify two examples that demonstrate the evolution from species A into species B. Not only will you satisfy my curiosity but fame awaits you.
Lorin Wainwood
Newbury Park