Acanthodii - Machaeracanthidae
Parent taxon: Acanthodii according to C. J. Burrow and D. K. Elliott 2023
See also van der Laan 2019
Sister taxa: Acanthodi, Acanthodida, Acanthodiformes, Antarctonchus, Archaeacanthus, Byssacanthoides, Campylodus, Climatiida, Climatiiformes, Diplacanthi, Diplacanthiformes, Eupleurogmus, Gemuendolepis, Haplacanthus, Homacanthus, Ischnacanthida, Ischnacanthiformes, Latviacanthus, Lupopsyroides, Lupopsyrus, Monopleurodus, Neoasiacanthus, Nodacosta, Nodonchus, Onchidae, Paucicanthus, Pinnacanthus, Promesacanthus, Ptychodictyon, Seretolepis, Striacanthus, Tchunacanthidae, Yealepis
Subtaxa: Machaeracanthus
Type: Machaeracanthus
Ecology: nektonic carnivore
Distribution:
• Devonian of Antarctica (2 collections), Brazil (2), Czechia (1), Germany (2), Morocco (8), United States (6: California, Michigan, Nevada, Wyoming), Venezuela (1)
Total: 22 collections including 23 occurrences