In Tasmania, this genus includes 8 species, as follows:
Dentimargo allporti (Allport’s margin-shell)
Dentimargo dentiens (toothy margin-shell)
Dentimargo gabrieli (Gabriel’s margin-shell) (figure a)
Dentimargo jaffa (Cape Jaffa margin-shell)
Dentimargo kemblensis (Port Kembla margin-shell)
Dentimargo lodderae (Loddera’s margin-shell)
Dentimargo maugeana (Maugean margin-shell)
Dentimargo mayii (May’s margin-shell) (figure b)