A newly recognized fossil confirms that Owen’s big echidna (Megalibgwilia owenii), an extinct species twice the scale of contemporary echidnas, as soon as inhabited jap Victoria in the course of the Pleistocene Epoch. This discovery bridges a 1,000-kilometer hole within the animal’s identified vary.
Foul Air Cave: A Lethal Entice for Historical Megafauna
Guests to Foul Air Cave close to Buchan township in jap Victoria encounter its infamous poisonous ambiance instantly. Deep inside, micro organism deplete oxygen and launch natural gases, making a lethal stench. The cave acts as a pure pitfall, with its steep, water-eroded entrance trapping unwary creatures. Muddy flooring and sheer drops protect the scent of long-dead animals.
Tens to a whole lot of 1000’s of years in the past, the cave amassed bones from Australia’s megafauna, together with big marsupials like clawed palorchestids and predatory marsupial lions.
Early Explorations Unearth Historical Bones
In 1906–1907, explorers Frank Palmer Spry from Museums Victoria, native caves curator Francis Moon, and geologist Thomas Sergeant Corridor ventured into the cave. They recovered quite a few fossil bones from damp soil and deposited them within the state assortment at Melbourne Museum.
These specimens now present contemporary insights into prehistoric life. A seven-centimeter cranium fragment, collected throughout that period, matches M. owenii proportions when in comparison with fossils throughout Australia.
Options of Owen’s Big Echidna
Beforehand identified from sparse stays in Western Australia, South Australia, Tasmania, and New South Wales, Owen’s big echidna measured about one meter lengthy and weighed round 15 kilograms—corresponding to a four-year-old little one.
Its title combines the Greek prefix “mega-” for big with “libgwil,” the Wemba Wemba individuals’s phrase for echidna, honoring Nineteenth-century anatomist Sir Richard Owen.
This sturdy monotreme resembled New Guinea’s long-beaked echidna (Zaglossus bruijnii) however featured broader limbs, heavier musculature, and a large, untoothed beak with palatal ridges. Variations counsel it ripped aside logs or dug laborious soil for beetle and moth larvae, differing from termite-eating trendy species just like the short-beaked echidna (Tachyglossus aculeatus).
Fashionable Evaluation and Cave Revisit
Systematic evaluate of Museums Victoria collections recognized the fossil. Historic data, together with diaries, maps, and newspapers, hyperlink it to Spry’s efforts.
Current expeditions retraced these paths utilizing superior gear: vivid headlamps, protecting oversuits, and sturdy ropes. Collaboration with Parks Victoria rangers, native households, and the Victorian Speleological Affiliation echoes the unique crew’s success by way of curiosity and neighborhood.
Future Discoveries Await
This discover highlights how museum collections yield breakthroughs lengthy after fieldwork. Different slender echidna fossils from Victoria and South Australia benefit re-examination to discover variations or new species.
Current evaluation in Alcheringa: An Australasian Journal of Palaeontology underscores potential hyperlinks to ancestors of New Guinea echidnas, presumably current in northern Australia into the twentieth century.
