Geogamasus Lee, 1970

Geogamasus apophyseus Karg, 1976

Geogamasus arcus Karg, 1976

Geogamasus ardoris Karg, 1976

Geogamasus bicirrus Karg, 1976

Geogamasus bisetosus Karg, 1976

Geogamasus brevisetosus Karg, 1997

Geogamasus brevitondentis Karg, 1998

Geogamasus cochlearis Karg, 1976

Geogamasus coxalis (Sheals, 1962)

Geogamasus cuneatus Karg, 1998

Geogamasus delamarei (Sheals, 1962)

Geogamasus diffindentis Karg, 1997

Geogamasus fibularis Karg, 1976

Geogamasus filicuspidis Karg, 1976

Geogamasus flagellatus Karg, 1976

Geogamasus foliaceus Karg, 1976

Geogamasus forcipis Karg, 1976

Geogamasus fornix Halliday, 2001

Geogamasus furcatius Karg, 1976

Geogamasus howardi Lee, 1970

Geogamasus incisus Karg, 1976

Geogamasus levispiritus Karg, 1998

Geogamasus longisetosus Karg, 1976

Geogamasus minimus Lee, 1973

Geogamasus monocuspidis Karg, 1976

Geogamasus pentaspinosus Karg, 1979

Geogamasus pisciformis Karg, 1997

Geogamasus pugionis Karg, 1976

Geogamasus reticulatus Karg, 1976

Geogamasus skoshi Lee, 1970

Geogamasus trispinosus Karg, 1976