Newnhamia
 Newnhamia is a genus of ostracods. It contains five species four of which are endemic to Australia and surrounding islands (including New Zealand and New Caledonia) while a fifth was described in 2003 from Kerala India. Two species from South America described as species of Newnhamia do not appear to be closely related to the remaining species and probably belong in a different genus. N. fuscata and N.