†Rhoidium Unger 1850
PaleoDB taxon number: 413976
Parent taxon: Anacardiaceae according to H. N. Andrews 1970
Sister taxa: Anacardiophyllum, Anacardites, Anacardium, Astroniumxylon, Choerospondias, Colombicarpum, Comocladia, Dracontocarya, Dracontomelon, Edenoxylon, Glutoxylon, Haplorhus, Heterocalyx, Holigarnoxylon, Lannea, Lanneoxylon, Lobaticarpum, Magniferoxylon, Pentoperculum, Pistacia, Pleiogynium, Pseudosclerocarya, Pulcheripollenites, Rhoideae, Rhus, Schinopsis, Schinoxylon, Schinus, Semecarpites, Spondiae, Spondiaecarpon, Spondicarya, Swintonioxylon, Teschia, Trilobium, Xylocarya
Subtaxa: Rhoidium juglandinum, Rhoidium ungeri
Type: Rhoidium juglandinum