Trilobita - Ptychopariida - Catillicephalidae
Synonym: Avonaspis Lochman 1940
Parent taxon: Catillicephalidae according to P. A. Jell and J. M. Adrain 2002
See also Sepkoski 2002 and Westrop 1992
Sister taxa: Acheilops, Buttsia, Calculites, Catillicephala, Cryptoderaspis, Distazeris, Galeaspis, Lajishanaspis, Madarocephalus, Matania, Onchonotellus, Onchonotopsis, Onchonotus, Pemphigaspis, Peracheilus, Theodenisia, Theodensia, Triarthropsis, Tumidulaspis, Tuojiangella, Urbanaspis, Yukonaspis
Subtaxa: Welleraspis jerseyensis Welleraspis newfoundlandensis
Type: Liostracus jerseyensis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Cambrian of Canada (8: Newfoundland, Yukon collections), Greenland (6), United States (7: Pennsylvania, South Dakota)
Total: 21 collections including 22 occurrences
Specimen images are retrieved through the ePANDDA API.
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