Conodonta - Prioniodontida - Distomodontidae
Alternative combinations: Hadrognathus staurognathoides, Johnognathus huddlei
Synonyms: Hadrognathus brevialata Walliser 1964, Hadrognathus caudata Walliser 1964, Roundya brevialata Walliser 1964, Roundya caudata Walliser 1964
Belongs to Distomodus according to C. B. T. Waid and B. D. Cramer 2017
See also Aldridge 1972, Barrick and Klapper 1976, Over and Chatterton 1987, Schönlaub 1975 and Walliser 1964
Sister taxa: Distomodus combinatus, Distomodus kentuckyensis
Ecology: nektonic carnivore
Distribution:
• Niagaran of Canada (3: Québec collections)
• Silurian of Austria (1), Canada (52: British Columbia, Cape Manning, Cornwallis Island, Manitoba, Nunavut, Ontario, Quebec, Québec), China (1), Estonia (15), Greenland (5), Poland (4), the Russian Federation (2), the United Kingdom (1), United States (67: Indiana, Iowa, Kentucky, Nevada, New York, Ohio, Tennessee, Utah)
• Ordovician to Silurian of Canada (2: Nunavut)
Total: 153 collections including 167 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.