clade Euthyneuraclade Panpulmonata clade Eupulmonata clade Stylommatophora Cylindrus obtusus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicidae, the typical snails.

[3] The dispersal rate of Cylindrus obtusus is about 3 cm per day.

[3] C. obtusus is one of the most prominent endemic snail species of the Eastern Alps.

In the easternmost snail populations there is strong evidence for selfing (self-fertilization) as indicated by microsatellite data.

[4] In eastern populations, compared to western populations, mucous gland structures employed in sexual reproduction are highly variable and deformed suggesting that in selfing organisms the functionality of these structures is reduced.