When originally proposed, Cupressinoxylon included previously validly published fossil-generic name, Retinodendron Zenker (1832), and therefore, it was illegitimate and nomenclaturally superfluous; at present Cupressinoxylon is conserved against Retinodendron with a new conserved type, C. gothanii Kräusel (in Jahrb. Preuss. Geol. Landesanst. 39: 436. 1920), typ. cons.