Full reference: F. A. Sundberg and L. B. McCollum. 2002. Kochiella Poulsen, 1927, and Hadrocephalites new genus (Trilobita: Ptychopariida) from the early middle Cambrian of western North America. Journal of Paleontology 76(1):76-94
Parent taxon: Ptychopariacea according to F. A. Sundberg and L. B. McCollum 2002
See also Jell and Adrain 2002
Sister taxa: Eokochaspis, Kochina, Mexicella
Subtaxa: Hadrocephalites carina Hadrocephalites cecinna Hadrocephalites convexus Hadrocephalites lyndonensis Hadrocephalites rhytidodes Schistometopus
Type: Hadrocephalites lyndonensis
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Solvan of Canada (6: British Columbia collections)
• Delamaran of Canada (4: Alberta, British Columbia), United States (3: California, Nevada)
• Cambrian of Argentina (1), United States (18: Idaho, Nevada)
Total: 32 collections including 35 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.