Trilobita - Lichida - Lichidae
Full reference: J. R. Pollitt, R. A. Fortey, and M. A. Wills. 2005. Systematics of the trilobite families Lichidae Hawle & Corda, 1847 and Lichakephalidae Tripp, 1957: the application of Bayesian inference to morphological data. Journal of Systematic Palaeontology 3(3):225-241
Parent taxon: Lichinae according to J. R. Pollitt et al. 2005
Sister taxa: Anadesma, Dicranopeltini, Echinolichini, Lichini, Tetralichini, Trimerolichas
Subtaxa: Allolichas Arctinurus Autoloxolichas
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Silurian of Canada (12: Manitoba, Northwest Territories, Ontario, Quebec collections), Norway (1), Sweden (4), United States (40: Arkansas, Illinois, Indiana, Iowa, New York, Wisconsin)
• Ordovician of Ireland (13), the United Kingdom (7), United States (3: Kentucky, Ohio)
Total: 80 collections including 81 occurrences