†family Cephalaspidae Huxley 1861 (vertebrate)
Petromyzontida - Cephalaspidiformes - Cephalaspidae
Full reference: T. H. Huxley. 1861. Preliminary essay upon the systematic arrangment of the fishes of the Devonian Epoch. Memoirs of the Geological Survey of Great Britain, decade 10 23:1-40
Parent taxon: Cephalaspidiens according to P. Janvier 1985
See also Bryant 1933, Gardiner 1966, Hay 1902, Huxley 1861 and Moy-Thomas and Mile 1971
Sister taxa: none
Subtaxa: Cephalaspis Didymaspis Eukeraspis
Type: Cephalaspis
Ecology: fast-moving nektonic carnivore
Distribution:
• Devonian of Canada (6: New Brunswick, Nova Scotia, Quebec collections), Ukraine (1), the United Kingdom (3), United States (2: Wyoming)
• Silurian of Lithuania (1)
Total: 13 collections including 17 occurrences