A new type of the fossil-genus, Manilkaroxylon bohemicum U. Prakash, Březinová & N. Awasthi, was designated by U. Prakash, Březinová & N. Awasthi (in Palaeontographica, Abt. B, Paläophytol. 147(4-6): 114. Oct 1974), is nomenclaturally inadmissible.
Manilkaroxylon E. Hofmann (1948) was not validly published due to the lack of necessary illustrations.
non Manilkaroxylon E. Hofmann (1948).