An extinct platy species of the Caribbean Montastraea "annularis" coral species complex from the >500,000 year reef terraces in Barbados (Photo: John Pandolfi).

An extinct columnar species of the Caribbean Montastraea "annularis" coral species complex from the ~300,000 year reef terraces in Barbados. (Photo: John Pandolfi)

Both photos are of species generated at the edges of species range distributions for the coral species complex, so represent evolutionary novelties.