Homo habilis to homo sapiens. Therapsids to Pelycosaurs. There are many examples of evolution from one species to another.
Polar bears evolved from grizzly bears recently enough (some estimates say only about 70,000 years ago) that it is unclear whether they are really separate species. There have actually been incidents of interbreeding producing fertile offspring. Such relations between closely related creatures blur the lines between one species and the next. That blurring is, beyond question, proof of gradual evolution between species.
More about polar and grizzly bears here
Once again, the terms "macroevolution" and "microevolution" has meaning only to creationists. In terms of biology, they are the same process.
The correct word is transitional, not transitory, but what the heck. Go ahead and make up your own vocabulary if you wish.
you will happily give me material. Credible material simply doesn't exist.
Every species on Earth is in a constant state of evolutionary change, and therefore transitional. That change takes place very slowly, over what is to humans a very long period of time. If you want examples of transitional, or transitory if you prefer to misuse that term, species, than just name any species.