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Thick-lipped pebblesnail
Conservation status
Extinct  (IUCN 3.1)
Presumed Extinct  (NatureServe)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Neotaenioglossa
Family:	Lithoglyphidae
Genus:	Somatogyrus
Species:	†S. crassilabris
Binomial name
†Somatogyrus crassilabris Walker, 1915

The thick-lipped pebblesnail, scientific name Somatogyrus crassilabris, was a species of freshwater snail with an operculum, an aquatic gastropod mollusc in the family Lithoglyphidae. This species was endemic to Baxter County, Arkansas in the United States. Its natural habitat was the north fork of the White River. It is now extinct.

References

1. Cordeiro, J. & Perez, K. (2011). "Somatogyrus crassilabris". IUCN Red List of Threatened Species. 2011: e.T20355A9190667. doi:10.2305/IUCN.UK.2011-2.RLTS.T20355A9190667.en. Retrieved 16 November 2021.
2. "Somatogyrus crassilabris". NatureServe Explorer An online encyclopedia of life. 7.1. NatureServe. Retrieved 10 October 2023.

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• IUCN Red List extinct species
• NatureServe presumed extinct species
• Somatogyrus
• Extinct gastropods
• Endemic fauna of Arkansas
• Species known from a single specimen
• Baxter County, Arkansas
• Hypsogastropoda stubs