Given the larger size of "P. goliah" and its tendency to favor larger, free-standing water sources, episodic droughts accumulating 55 kya in the southern interior region of Australia would have certainly affected its populations. Yet, records show that such droughts had characterised this region for the previous 7 million years, with "P. goliah" surviving multiple intensely dry episodes during this period. Any period of significant decreases in rainfall did not occur until 5,000–10,000 years after the approximate extinction of "P. goliah" 45–50 kya, 20 ky before the last glacial maximum of high aridity. These factors disprove speculations that such droughts could have played a significant role in the extinction of "P. goliah".