 Recent genetic analysis revealed that "Ixerba", an endemic of New Zealand, is closely related to Strasburgeria and it was assigned to the Strasburgeriaceae by the APG III in 2009.Fossil pollen named "Bluffopollis scabratus", found in deposits from the Paleocene to the Miocene, is almost identical to the pollen of "Strasburgeria", although only half its size.The fact that it was found in western and southern Australia and in New Zealand suggests that the most recent common ancestor of "Strasburgeria" and "Ixerba" had developed by the time of the break-up of East-Gondwana.