Complex sentence: Its closest relatives are "Cyclura nubila nubila" on Cuba, and "Cyclura lewisi" on Grand Cayman, all three having apparently diverged from a common ancestor some 3 million years ago.
Split into simpler sentences: Its closest relatives are "Cyclura nubila nubila" on Cuba, and "Cyclura lewisi" on Grand Cayman. All three apparently diverged from a common ancestor some 3 million years ago.