Classification: Chordata, Osteostraci, Thyestiida, Tremataspidoidea, Tremataspididae.
Species: D. patten.
Size: Uncertain due to incomplete remains.
Known locations: Estonia.
Time period: Silurian.
Fossil representation: Head shield.
So far only known from the head shield, Dartmuthia was a bottom feeding jawless fish of the Silurian period.
- The ostracoderm genus Dartmuthia patten, George M. Robertson - 1935.