Biology:Amastra crassilabrum
| Amastra crassilabrum | |
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. crassilabrum
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| Binomial name | |
| Amastra crassilabrum Newcomb, 1854[3]
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| Location of Oʻahu | |
| Synonyms | |
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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. doi:10.2305/IUCN.UK.1996.RLTS.T991A13100921.en. https://www.iucnredlist.org/species/991/13100921. Retrieved 16 November 2021.
- ↑ NatureServe. "Amastra crassilabrum" (in en). Arlington, Virginia. https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.116224/.
- ↑ "WoRMS - World Register of Marine Species - Amastra crassilabrum (Newcomb, 1854)". https://www.marinespecies.org/aphia.php?p=taxdetails&id=1716732.
- ↑ 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. https://www.biodiversitylibrary.org/page/30747263. Retrieved 19 November 2024.
This article incorporates text from a publication now in the public domain:
Wikidata ☰ Q308692 entry
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