''Ancotrema'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

s, terrestrial

pulmonate Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s in the family Haplotrematidae. This genus is sometimes considered to be a subgenus of ''

Haplotrema ''Haplotrema'' is a genus of carnivorous land snails in the family Haplotrematidae. They are widely distributed in North America. Species Species include:Myers, P., et al''Haplotrema''.The Animal Diversity Web. 2013. * '' Haplotrema alamed ...

''. ''Haplotrema'' and ''Ancotrema'' cannot be distinguished only on the basis of their shells, but can be distinguished on the basis of their detailed internal anatomy. The genus ''Ancotrema'' contains the following species:
Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). * '' Ancotrema hybridum'' (Ancey, 1888); Oregon lancetooth * '' Ancotrema sportella'' (Gould, 1846); beaded lancetooth * ''

Ancotrema voyanum ''Ancotrema'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Haplotrematidae. This genus is sometimes considered to be a subgenus of ''Haplotrema''. ''Haplotrema'' and ''Ancotrema'' cannot be d ...

'' (Newcomb, 1865); hooded lancetooth * ''

Ancotrema zopherum ''Ancotrema'' is a genus of air-breathing land snails, terrestrial animal, terrestrial pulmonate gastropod mollusks in the family Haplotrematidae. This genus is sometimes considered to be a subgenus of ''Haplotrema''. ''Haplotrema'' and ''Ancot ...

'' Roth, 1990: dusky lancetooth

References

{{Taxonbar, from=Q3073030 Haplotrematidae