Conodonta - Protopanderodontida - Clavohamulidae
Parent taxon: Protopanderodontida according to L. J. Pyle and C. R. Barnes 2002
See also Clark et al. 1981 and Sweet 1988
Sister taxa: Acanthodontidae, Cornuodontidae, Drepanoistodontidae, Oneotodontidae, Protopanderodontidae, Serratognathidae
Subtaxa: Clavohamulus Granatodontus Hirsutodontus Hispidodontus Nericodus Paraserratognathus
Ecology: nektonic carnivore
Distribution:
• Arenig of Argentina (1 collection), China (3), the Russian Federation (1)
• Ordovician of Argentina (1), Australia (1), the Russian Federation (1), United States (6: New Mexico, Virginia)
• Tremadoc of Antarctica (1), China (4), the Russian Federation (7), United States (2: Virginia)
• Cambrian to Ordovician of the Russian Federation (1)
• Cambrian of Canada (3: Alberta, Newfoundland and Labrador, Nunuvat), China (7), the Russian Federation (2), South Korea (8), United States (5: New Mexico, Vermont, Virginia)
Total: 54 collections including 80 occurrences