†family Protaspidae Bryant 1933 (jawless fish)
Pteraspidomorpha - Pteraspidiformes - Protaspidae
Full reference: W. L. Bryant. 1933. The Fish Fauna of Beartooth Butte, Wyoming. Proceedings of the American Philosophical Society 72(5):285-314
Parent taxon: Pteraspidiformes according to R. van der Laan 2019
See also Bryant 1933, Nelson et al. 2016 and Randle and Sansom 2017
Sister taxa: Anchipteraspididae, Dnestraspis, Podolaspinae, Protopteraspididae, Psammosteoidei, Pteraspididae, Pteraspidoidei
Subtaxa: Protaspis
Type: Protaspis
Ecology: planktonic suspension feeder
Distribution:
• Devonian of United States (3: Wyoming collections)
Total: 3 collections including 6 occurrences