Do you believe in "punctuated equilibrium"?
I do not believe in either evolution or punctuated equilibrium.
However, I do accept the evidence that creates these models of how nature works. Such is science. Science is not a "belief". It is a series of rigorously tested models (theories) that describe the universe. Theories do get refined as we learn or discover new things, however, the amount of evidence for a theory is a vast array indeed.