Ancotrema Hybridum
''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 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 * ''
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Ancotrema Sportella
''Ancotrema sportella'', common name the beaded lancetooth, is a species of air-breathing land snail, a terrestrial pulmonate gastropod 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 ... in the family Haplotrematidae. References Haplotrematidae Gastropods described in 1846 {{Haplotrematidae-stub ...
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