The Ediacaran represents the first time that complex life is recorded in our planet's history. Although there is evidence of the Ediacara Biota in most continents, the diversity and quantity of the 555 million-year-old Australian record is unrivalled, with over 50 taxa across the Flinders Ranges of South Australia. These early multicellular, marine organisms were unmineralised but are exceptionally preserved in sandstone, ranging in size from a couple of millimetres of the mat-feeding bilaterian Ikaria to over a meter in length for the largest Dickinsonia.