First published in 1865 as a caterpillar, nearly fifty years before the discovery of Canada’s Burgess Shale, Palaeocampa anthrax shuffled between classifications — worm, millipede, and marine polychaete — until 130 years later, when University of Michigan paleontologist Richard Knecht and his colleagues realized its true identity: Palaeocampa anthrax most likely inhabited a freshwater environment, contesting the view that Paleozoic lobopodians...
