# Ancient Tasmanian Devils Roamed Western Australia Alongside Early Humans 45,000 Years Ago
New fossil evidence reveals that Tasmanian devils inhabited mainland Australia far longer than scientists previously believed, coexisting with human populations in the outback regions of Western Australia approximately 45,000 years ago.
The discovery challenges the common assumption that these carnivorous marsupials existed only in Tasmania. Researchers have uncovered skeletal remains that demonstrate the species once had a much wider geographic range across the Australian continent before eventually retreating to Tasmania, where they survived until today.
The findings come from excavations in Western Australia's inland regions, where paleontologists identified fossil teeth and bone fragments consistent with Tasmanian devil anatomy. Dating analysis places these remains within the same timeframe as early human settlement in Australia, offering a window into the ecological landscape that Aboriginal peoples encountered during the continent's initial habitation.
Tasmanian devils, known scientifically as Sarcophilus harrisii, are the largest carnivorous marsupials in existence. Today they weigh between 8 and 12 kilograms and are found exclusively on the island of Tasmania. Their presence in mainland Australia 45,000 years ago indicates substantial environmental and ecological changes over millennia, likely driven by shifting climates, vegetation patterns, and prey availability.
The extinction of mainland populations remains unclear. Researchers suggest multiple factors may have contributed, including competition from other predators, changes in prey species availability, or pressure from human hunting and habitat modification. The species' eventual confinement to Tasmania may reflect that island's unique ecological conditions, which allowed the population to persist when mainland environments became inhospitable.
This research carries relevance for understanding Australia's megafauna extinctions, a period roughly 45,000 to 50,000 years ago when numerous large animals disappeared from the continent. While Tasmanian devils survived this extinction event, their dramatic range contraction mirrors patterns seen in other species that endured dramatic population collapse during early human occupation of Australia.
The work also illuminates Aboriginal ecological knowledge and interaction with fauna during Australia's earliest periods of human settlement. Indigenous peoples coexisted with a vastly different animal assemblage than exists today, shaped by different climate patterns and predator-prey relationships.
Conservation implications emerge as well. Understanding why mainland devil populations vanished while Tasmanian populations persisted offers clues for modern conservation efforts. Today's Tasmanian devil population faces threats from disease and declining genetic diversity. Studying how the species adapted to environmental change in the past may inform strategies for protecting remaining populations.
The research demonstrates that fossil records continuously refine our understanding of Australia's natural history. Each discovery shifts timelines, expands known ranges, and reveals ecological complexity that shaped the continent's biodiversity. As more mainland sites undergo excavation, additional fossils may reveal further details about how these animals lived alongside humans and what drove their ultimate disappearance from most of Australia.