Palaeoscolecida - Cricocosmida
Full reference: J. Han, Y. Yao, Z. Zhang, J. Liu, and D. Shu. 2007. New observations on the palaeoscolecid worm Tylotites petiolaris from the Cambrian Chengjiang Lagerstätte, south China. Paleontological Research 11(1):59-69
Parent taxon: Palaeoscolecida according to J. Han et al. 2007
Sister taxa: Bohemoscolex, Corallioscolex, Cowiella, Floraconformis, Gammascolex, Milaculum, Palaeoscolecida, Plasmuscolex, Protoscolex
Subtaxa: Maotianshaniidae Palaeoscolecidae Tylotitidae
Ecology: facultatively mobile shallow infaunal carnivore
Distribution:
• Silurian of the United Kingdom (3 collections)
• Ordovician of the United Kingdom (1)
• Cambrian of Antarctica (1), Australia (6), China (48), Greenland (13), the Russian Federation (3), Türkiye (1), the United Kingdom (1), United States (2: Utah)
• Solvan of the Russian Federation (1)
• Amgan of Kyrgyzstan (1), the Russian Federation (1)
• Caerfai of China (2)
Total: 84 collections including 89 occurrences