Thaanumella angulosa
Thaanumella angulosa is a species of salt marsh snail with an operculum, an aquatic gastropod mollusk in the family Assimineidae. This species is endemic to Micronesia. References

 WoRMS info on the species

Gastropods of Micronesia
Thaanumella
Assimineidae
Gastropods described in 1946
Taxonomy articles created by Polbot