Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropoda
Subclassis: Heterobranchia
Infraclassis: Euthyneura
Cohors: Tectipleura
Subcohors: Panpulmonata
Superordo: Eupulmonata
Ordo: Stylommatophora
Subordo: Helicina
Infraordo: Oleacinoidei
Superfamilia: Haplotrematoidea
Familia: Haplotrematidae
Genus: Ancotrema
Species: A. hybridum – A. sportella – A. voyanum – A. zopherum
Name
Ancotrema H.B. Baker, 1931
References
Baker, H. B.. 1931. The land snail genus Haplotrema. Proceedings of the Academy of Natural Sciences of Philadelphia 82: 408.
Roth, B. 1991. A phylogenetic analysis and revised classification of the North American Haplotrematidae (Gastropoda: Pulmonata). American Malacological Bulletin 8: 155.
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.[3]
The genus Ancotrema contains the following species:[4][5]
Ancotrema hybridum (Ancey, 1888); Oregon lancetooth
Ancotrema sportella (Gould, 1846); beaded lancetooth
Ancotrema voyanum (Newcomb, 1865); hooded lancetooth
Ancotrema zopherum Roth, 1990: dusky lancetooth
References
Binney, William G. (1878). The Terrestrial Air-Breathing Mollusks of the United States and Adjacent Territories of North America. Vol. 5 (plates). Bull. Mus. Comparative Zool., Harvard. Plate 22.
Baker, Horace B. 1931. Proc. Acad. Nat. Sci. Philadelphia 82: 405-409.
Pilsbry, Henry A. (1946). Land Mollusca of North America (North of Mexico). Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 2(1): 225-230.
[1] Integrated Taxonomic Information System (ITIS) taxonomic database
[2] Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online).
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