Amastra crassilabrum
| Amastra crassilabrum | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | †A. crassilabrum |
| Binomial name | |
| †Amastra crassilabrum | |
 | |
| Location of Oʻahu | |
| Synonyms | |
| |
Amastra crassilabrum is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusks in the family Amastridae.[4]
Description
(Original description) The shell is conically ovate, pointed at the apex, and ventricose toward the base, with a rather solid structure. It consists of six rounded whorls and features an ovate aperture. The outer lip is significantly thickened internally, while the short columella terminates in a prominent oblique plait. The surface is marked by strong longitudinal striations, with the body whorl often bearing cicatrices.
The body whorl is yellowish-white, contrasting with the dark brown or black coloration of the upper whorls.[5]
Distribution
This species was endemic to Oʻahu, and was known from the Waiʻanae Range.
References
- ↑ Mollusc Specialist Group (1996). "Amastra crassilabrum". IUCN Red List of Threatened Species. 1996 e.T991A13100921. doi:10.2305/IUCN.UK.1996.RLTS.T991A13100921.en. Retrieved 16 November 2021.
- ↑ NatureServe. "Amastra crassilabrum". NatureServe Explorer. Arlington, Virginia. Retrieved 3 May 2026.
- ↑ "WoRMS - World Register of Marine Species - Amastra crassilabrum (Newcomb, 1854)". www.marinespecies.org. Retrieved 2024-11-19.
- ↑ Amastra crassilabrum (Newcomb, 1854). 23 November 2024. Retrieved through: World Register of Marine Species.
- ↑ Newcomb, W. (1854). "Descriptions of seventy·nine new species of Achatinella, (Swains.), a genus of pulmoniferous mollusks, in the collection of Hugh Cuming, Esq". Proceedings of the Zoological Society of London. 21: 142. Retrieved 19 November 2024.
This article incorporates text from this source, which is in the public domain.
