After American ornithologist Alexander Wetmore described bones of the large Saint Helena Swamphen from Prosperous Bay, Saint Helena, in 1963, American paleontogologist Storrs Olson found almost complete skeletons of the Saint Helena Crake in the same region in 1973. These skeletons consists of bones which were smaller than the bones of Atlantisia podarces. Due to the peculiar shape of the carpometacarpus Olson named this species Porzana astrictocarpus.
The Porzana astrictocarpus is classified as Extinct (EX), there is no reasonable doubt that the last individual has died.
Summary Porzana astrictocarpus is only known from fossils from St Helena (to UK)2. It is likely to have become extinct soon after the island was discovered in 15021. Ecology: Nothing is known. Threats It was driven to extinction by introduced predators. References 1. Olson (1973). 2. Olson (1975b). More
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