Complex sentence: The full distribution of "Nothomyrmecia" has never been assessed, and it is unknown how widespread it really is; its potential range may be wider if it does favour old-growth mallee woodland.
Split into simpler sentences: The full distribution of "Nothomyrmecia" has never been assessed, and it is unknown how widespread it really is. However, its potential range may be wider if it does favour old-growth mallee woodland.