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Removal of Gypsum from Microfossiliferous ShalesRoyal H. Mapes and Gene Mapes · Micropaleontology · 1982
Late Paleozoic conifers of North America: structure, diversity and occurrencesGar W. Rothwell; Gene Mapes; Royal H. Mapes · 1997
Medullosa steinii sp. nov., a seed fern vine from the Upper MississippianMichael T. Dunn; Michael Krings; Gene Mapes; Gar W. Rothwell; Royal H. Mapes; Sun Keqin · 2003
Anatomically Preserved Vojnovskyalean Seed Plants in Upper Pennsylvanian (Stephanian) Marine Shales of North AmericaGar W. Rothwell, Gene Mapes and Royal H. Mapes · Journal of Paleontology · 1996
Anatomically preserved vojnovskyalean seed plants in Upper Pennsylvanian (Stephanian) marine shales of North AmericaRothwell, Gar W.; Mapes, Gene; Mapes, Royal H. · Journal of Paleontology · 1996
Pityostrobus hokodzensis, a New Species of Pinaceous Cone from the Cretaceous of RussiaStephen R. Ratzel, Gar W. Rothwell, Gene Mapes, Royal H. Mapes and Larisa A. Doguzhaeva · Journal of Paleontology · 2001
La Luna Special Issue || Taphonomic Features of a Lower Permian Beached Cephalopod Assemblage from Central TexasHaruyoshi Maeda, Royal H. Mapes and Gene Mapes · PALAIOS · 2003