† Gackstroemia cretacea Heinrichs, Schäf.-Verw., K.Feldberg et A. R.Schmidt,
Rev. Palaeobot. Palynol. 203: 49, 2014 (see Heinrichs et al. 2014b).
TYPE: “ Holotype: Amber inclusion AMNH BU ASJH-1, American Museum of Natural History, New York, Plate I. Type locality: Myanmar. Stratigraphic range and age: Lower Cretaceous: Upper Albian, about 100 million years old.”.