1. Dos nuevas especies de megaspores de la formacion kachiake, cretacico inferior de Santa Cruz, Argentina;Baldoni;An. do X Congr. Bras. Paleontol., Rio de Janeiro,1987
2. Revision of S.J. Dijkstra's Late Cretaceous megaspores and other plant microfossils from Limburg, The Netherlands;Batten;Meded. Rijks Geol. Deinst, Nieuwe Ser.,1988
3. Catalog of Mesozoic and Tertiary megaspores;Batten;Am. Assoc. of Stratigr. Palynol. Contrib. Ser.,1990
4. Ariadnaesporites and Capulisporites; “water fern” megaspores from the Upper Cretaceous of central Europe;Batten;Rev. Palaeobot. Palynol.,1994