These underwater bones could solve a mystery about extinct giants
Animal bones preserved in South Australia’s underwater caves reveal distinctive clues shaped by darkness, algae, bacteria, and other environmental conditions. The findings give scientists a powerful new way to reconstruct how ancient megafauna remains entered and survived in submerged cave systems.
Underwater bones discovered in South Australia may hold the key to solving a mystery surrounding extinct giants. Scientists have developed a framework to interpret the evidence preserved on these bones, revealing how they accumulated and changed over time. A study by Griffith University, led by Meg Walker, analyzed animal bones from two underwater cave systems in the region.
The bones from underwater caves showed remarkable preservation, retaining their original structures and detailed surfaces. Meanwhile, cave bones in submerged environments displayed unique chemical and biological marks, influenced by factors such as light levels and surrounding organisms. Bones from dry caves had different changes, showing signs of consumption by land-based bacteria and carving by plant roots.
The researchers collected bones from Green Waterhole and Gouldens Sinkhole, which may date back to the 1840s. By studying these bones, scientists aim to understand how fossils of extinct megafauna entered underwater caves and gain insights into the environmental conditions surrounding those ancient remains. This research offers a powerful new tool for archaeologists and paleontologists worldwide to reconstruct past environments and histories in these challenging conditions. The study has been published in PLOS One.
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