GAARlandia

GAARlandia (from Greater Antilles + Aves Ridge) is a hypothesized land bridge which is proposed to have connected the Greater Antilles to South America around 33 million years ago (mya) via the now submerged Aves Ridge to the west of the Lesser Antilles. Animal and plant species are thought to have colonized the Caribbean Islands through dispersal and vicariance, and the most prominent vicariance hypothesis involves colonization via GAARlandia. Proponents of the hypothesis cite studies of individual lineages, while critics point to a lack of geological evidence for a landbridge during this interval.

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