"Microevolution" and "macroevolution" are creationist terms. Now, biologists have been known to use such terms, but they usually make reference to evolutionary changes below the species level as "microevolution" and evolutionary changes above the species level as "macroevolution."
This is not really true. Or, at the very least, it's an open question in Evolutionary theory.
It's generally accepted that there are
some processes important at the macroevolutionary level which are not explicable at the microevolutionary level and some theorists argue for a large role for these processes. For example, mass extinctions, geographical shifts, clade level selection for generalism, sexual reproduction, etc.
So, while the changes
within each lineage can be described as incremental microevolutionary steps; there is good reason to think that the description of macroevolutionary patterns of evolution needs additional mechanisms.
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