Ogasawarana obtusa

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Ogasawarana obtusa
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Neritimorpha

clade Cycloneritimorpha

Superfamily: Helicinoidea
Family: Helicinidae
Genus: Ogasawarana
Wagner, 1905[1]
Species: O. obtusa
Binomial name
Ogasawarana obtusa
Chiba, Sasaki, Suzuki & Horikoshi, 2008[2]

Ogasawarana obtusa is an extinct species of snail from Chichi-jima, Ogasawara, Japan. The holotype and paratypes are from 720 years BP. The shell is 4.9 to 5.3 millimetres (0.19 to 0.21 in) in diameter and 2.7 to 2.8 millimetres (0.11 to 0.11 in) in height. It has approximately 3.5 whorls. The surface of the shell is smooth, with fine growth lines and no spiral lines.[2]

References

  1. ↑ Wagner (1905). Denkschr. Akad. Wiss. Wien 77: 395.
  2. ↑ 2.0 2.1 Chiba, Staoshi; Tetsuro Sasaki, Hajime Suzuki, and Kazuo Horikoshi (2008). "Subfossil Land Snail Fauna (Mollusca) of Central Chichijima, Ogasawara Islands, with Description of a New Species". Pacific Science 63: 137–145. 


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