Zealandia: An eighth continent under New Zealand?

The dominant land mass of the Eurasian plate is Eurasia.

It's rather silly how this is SO ingrained that even an article about the definition of continents includes Europe without comment. Even the map it cites draws Europe in a unique way, as a distinct labeled area but also as a part of Eurasia. Zealandia makes infinitely more sense as a continent than Europe.

Also, I just found out that some textbooks in Europe teach that North and South America are the same continent. The irony.

The edges of Australia and Zealandia continental crust approach to within 25 km across the Cato Trough (Fig. 2). The Cato Trough is 3600 m deep and floored by oceanic crust (Gaina et al., 1998; Exon et al., 2006). The Australian and Zealandian COBs [continent-ocean boundaries] here coincide with, and have been created by, the Cato Fracture Zone along which there has been ~150 km of dextral strike slip movement, linking Paleogene spreading centers in the Tasman and Coral seas (Fig. 2; Gaina et al., 1998). This spatial and tectonic separation, along with intervening oceanic crust, means that the Zealandia continental crust is physically separate from that of Australia. If the Cato Trough did not exist, then the content of this paper would be describing the scientific advance that the Australian continent was 4.9 Mkm2 larger than previously thought.

On the other hand, Zealandia is a continent which broke away from Gondwana (much like India did) and has since stood independently apart, not accreting to any other continent.

[1] https://en.wikipedia.org/wiki/Himalayan_orogeny