Geography of New Caledonia a refugium, in effect a biological "Noah's Ark", an island home to both unique living plants and animals and also to its own special fossil endowment. Birds such as the crested and almost flightless kagu (French, "cagou") "Rhynochetos jubatus", whose closest relative may be the distantly related sunbittern of South America, and plants such as "Amborella trichopoda", the only known member of the most basal living branch of flowering plants, make this island a treasure trove and a critical concern for biologists and conservationists. The island was home to horned fossil turtles ("Meiolania mackayi") and terrestrial fossil crocodiles ("Mekosuchus inexpectatus")
Lowland kagu Lowland kagu The lowland kagu ("Rhynochetos orarius") is a large, extinct species of kagu. It was endemic to the island of New Caledonia in Melanesia in the south-west Pacific region. It was described from subfossil bones found at the Pindai Caves paleontological site on the west coast of Grande Terre. The holotype is a right tibiotarsus (NCP 700), held by the Muséum national d'histoire naturelle in Paris. The specific epithet comes from the Latin "orarius" (of the coast) from its presumed lowland distribution, as opposed to its congener the living kagu "R. jubatus". The general proportions of the various bones