Minidonta extraria Cooke & Solem

Strange Disc Snail (Minidonta extraria)

This species was described in the year 1976 from three specimens, of which one was found on the island of Akamaru, one on the island of Mangareva, and one on the island of Taravai.

The shells reach an average size of 0,29 cm in diameter.

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References:

[1] Alan Solem: Endodontoid land snails from Pacific Islands (Mollusca: Pulmonata: Sigmurethra). Part I, Family Endodontidae. Field Museum of Natural History Chicago, Illinois 1976
[2] Ahmed Abdou; Philippe Bouchet: Nouveaux gastéropodes Endodontidae et Punctidae (Mollusca, Pulmonata) récemment éteints da l’archipel des Gambier (Polynésie). Zoosystema 22(4): 689-707. 2000

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Minidonta aroa Brook

Aroa Minidonta Snail (Minidonta aroa)

This species was described in the year 2010 from subfossil shells that were found in the sandy soil of the coastal plains between the villages of Aro’a and Arorangi on the southwest coast of the island of Rarotonga.

The shells reach an average size of 0,25 to 0,3 cm in diameter.

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The species, which obviously was restricted to lowland areas, died out most probably already shortly after the colonization of the island by Polynesians.

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References:

[1] F. J. Brook: Coastal landsnail fauna of Rarotonga, Cook Islands: systematics, diversity, biogeography, faunal history, and environmental influences. Tuhinga 21: 161-252. 2010

Minidonta matavera Brook

Matavera Minidonta Snail (Minidonta matavera)

The Matavera Minidonta Snail from the island of Rarotonga was described in the year 2010.

This species is known only from empty shells, some of which are in a subfossil condition, while others appear relatively fresh, suggesting a relatively recent extinction date.

The shells reached a height of about 0,25 cm. [1]

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References:

[1] Fred J. Brook: Coastal landsnail fauna of Rarotonga, Cook Islands: systematics, diversity, biogeography, faunal history, and environmental influences. Tuhinga 21: 161-252. 2010

Minidonta iota Brook

Dwarfed Minidonta Snail (Minidonta iota)

This species was described in the year 2010 from very few, badly preserved subfossil shells, which were found in the sandy soil of the coastal plain near the village of Aro’a on the southwest coast of the island of Rarotonga.

The shells of this species reached an average size of 0,13 to 0,15 cm in diameter, which makes it the smallest of all known Endodontidae species at all.

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References:

[1] Fred J. Brook: Coastal landsnail fauna of Rarotonga, Cook Islands: systematics, diversity, biogeography, faunal history, and environmental influences. Tuhinga 21: 161-252. 2010