Petromyzontida - Cephalaspidiformes
Full reference: L. Agassiz. 1835. Recherches Sur Les Poissons Fossiles. Tome II (5me livraison) 85-200
Parent taxon: Cornuata according to R. S. Sansom 2009
See also Bryant 1933, Dumbrava and Blieck 2005, Gardiner 1966, Hay 1902, Huxley 1861, Owen 1859 and Woodward 1891
Sister taxa: Cephalaspidiens, Hildenaspis, Mimetaspis, Pattenaspis
Subtaxa: Cephalaspis acadica Cephalaspis campbelltonensis Cephalaspis canadensis Cephalaspis dawsoni Cephalaspis jarviki Cephalaspis jexi Cephalaspis laticeps Cephalaspis lewisii Cephalaspis lightbodii Cephalaspis lloydii Cephalaspis lyelli Cephalaspis murchisoni Cephalaspis novaescotiae Cephalaspis pagei Cephalaspis podolica Cephalaspis powriei Cephalaspis rostratus Cephalaspis westolli Cephalaspis wyomingensis
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
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.