I have been led to accept that macroevolution was a creationist concept. That was a mistake on my part. So now the burden of defining macroevolution falls upon me. It is a good thing it was defined in science.

In evolutionary biology today, macroevolution is used to refer to any evolutionary change at or above the level of species. It means at least the splitting of a species into two (speciation, or cladogenesis, from the Greek meaning "the origin of a branch") or the change of a species over time into another (anagenetic speciation, not nowadays generally accepted). Any changes that occur at higher levels, such as the evolution of new families, phyla or genera, are also therefore macroevolution, but the term is not restricted to those higher levels. It often also means long-term trends or biases in evolution of higher taxonomic levels.

Since speciation has been observed, then macroevolution has been observed.

Thanks for making me look that one up.