Family Betulaceae Gray 1822 (birch)
PaleoDB taxon number: 54589
Parent taxon: Fagales according to D.J. Mabberley 2000
Sister taxa: Casuarinaceae, Fagaceae, Nothofagaceae, Nothofagidites, Ticodendraceae
Subtaxa: Alnites, Alnophyllum, Alnus, Betula, Betuliphyllum, Betuloxylon, Carpinicarpus, Carpinus, Corylites, Coryloxylon, Corylus, Cranea, Eucarpinoxylon, Hooleya, Ostrya