Exceptionally well-preserved trilobite fossils from the Cambrian Wulongqing Formation near Guangwei Village in southern Kunming, the capital city of Yunnan Province of China, contradict previous assumptions about trilobite digestive systems. Palaeolenus lantenoisi showing evidence of crop, digestive glands, alimentary canal along thorax, and excreted waste posterior to pygidium. Scale bar – 5 mm. Image credit: Hopkins et al, doi: 10.1371/journal.pone.0184982. Trilobites...
