"In history and in evolution, progress is always a futile Sisyphean struggle...." -- Matt Ridley, zoologist, 1993
Descended from the Patagonian order Sphenodontia therefore falsifying plate tectonics, New Zealand's tuatara is alleged to be the fastest evolving animal. It is also alleged to be the biggest evolutionary loser. In other words, the faster an animal evolves the faster it loses. So much for survival of the fittest.
Science Daily: Naming Evolution's Winners And Losers.
ScienceDaily (Aug. 24, 2009) — Mammals and many species of birds and fish are among evolution's "winners," while crocodiles, alligators and a reptile cousin of snakes known as the tuatara are among the losers, according to new research by UCLA scientists and colleagues.