Rarotongan Thaumatodon Snail (Thaumatodon multilamellata)
The Rarotongan Thaumatodon Snail was described in the year 1872.
According to A. J. Garrett, the author of the species, the snails were found exclusively in two remote valleys on the island of Rarotonga, with the two populations most probably representing distinct subspecies. [1][2]
The shell reached a size of about 3,4 cm in diameter.
The last life specimens were found in the middle of the 19th century (around 1860), since then the species is considered extinct.
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References:
[1] Andrew J. Garrett: Descriptions of new species of land and fresh-water shells. American Journal of Conchology 7: 219-230. 1872
[2] Alan Solem: Endodontoid land snails from Pacific Islands (Mollusca: Pulmonata: Sigmurethra). Part I, Family Endodontidae. Field Museum of Natural History Chicago, Illinois 1976
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(not in copyright)
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edited: 19.03.2017