Marsupial Disc Snail (Endodonta marsupialis)
The Marsupial Disc Snail was described in 1905, it was already restricted to a tiny population back then, living in a small area on the western slope of Mt. Tantalus on the island of O’ahu, Hawaiian Islands.
The shells of this species reached sizes of about 0,36 to 0,38 cm in height and up to 0,82 cm in diameter. [1]
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The Marsupial Disc Snail is now, like most of its congeners, extinct. [2]
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References:
[1] Henry A. Pilsbry; C. Montangue Cooke Jr.; Marie C. Neal: Land Snails from Hawaii, Christmas Island, and Samoa. Bishop Museum Bulletin 47: 1-49. 1928
[2] Norine W. Yeung; Kenneth A. Hayes: Biodiversity and extinction of Hawaiian land snails: how many are left now and what must we do to conserve them – a reply to. Integrative and Comparative Biology 58(6): 1157-1169. 2018
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(not in copyright)
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edited: 08.05.2019