Alnus Miller 1768 (alder)
Magnoliopsida - Fagales - Betulaceae
PaleoDB taxon number: 54588
Parent taxon: Betulaceae according to M. E. J. Chandler 1963
Sister taxa: Alnites, Alnophyllum, Betula, Betuliphyllum, Betuloxylon, Carpinicarpus, Carpinus, Corylites, Coryloxylon, Corylus, Cranea, Eucarpinoxylon, Hooleya, Ostrya
Subtaxa: Alnus muelleri, Alnus operia, Alnus poolensis