†family Xenosynechodontidae Gluckman 1980 (elasmobranch)
Chondrichthyes - Xenacanthiformes - Xenosynechodontidae
Parent taxon: Xenacanthiformes according to Gluckman 1980
Sister taxa: Diplodoselachidae, Xenacanthidae
Subtaxa: Xenosynechodus
Ecology: nektobenthic carnivore
Distribution:
• Tatarian of the Russian Federation (4 collections)
• Permian of the Russian Federation (7)
Total: 11 collections including 12 occurrences