Ancotrema
Encyclopedia
Ancotrema is a genus
of air-breathing land snail
s, terrestrial
pulmonate gastropod mollusks in the family Haplotrematidae
.
This genus is sometimes considered to be merely 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:
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of air-breathing land snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
s, terrestrial
Terrestrial animal
Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...
pulmonate gastropod mollusks in the family Haplotrematidae
Haplotrematidae
Haplotrematidae is a taxonomic family of predatory air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Rhytidoidea.-Distribution:These are North American land snails...
.
This genus is sometimes considered to be merely a subgenus of Haplotrema
Haplotrema
Haplotrema is a genus of predatory air-breathing land snails, terrestrial pulmonate gastropod mollusks.This genus is the major genus in the terrestrial snail family Haplotrematidae.These carnivorous land snails are widely distributed in North America....
. 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:
- Ancotrema hybridum (Ancey, 1888); Oregon lancetooth
- Ancotrema sportellaAncotrema sportellaAncotrema sportella, common name the beaded lancetooth, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Haplotrematidae....
(Gould, 1846); beaded lancetooth - Ancotrema voyanum (Newcomb, 1865); hooded lancetooth
- Ancotrema zopherum Roth, 1990: dusky lancetooth