There are 22 species in the genus , 17 species have a sinistral cover and 5 species are dextral .
There are 22 species in the genus . 17 species have a sinistral shell and 5 species are dextral .
There are 22 species in the genus . 17 species have a sinistral shell and 5 species are dextral .
이 텍스트를 의역: There are 22 species in the genus , 17 species have a sinistral cover and 5 species are dextral . 산출: