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2. Feeding systems of living Dipnoi; anatomy and function;Bemis;J. Morphol.,1987
3. Lungfish from the Lueders Formation (Lower Permian, Texas) and the Gnathorhiza-lepidosirenid ancestry questioned;Berman;J. Paleontol.,1968
4. Cranial morphology of the Lower Permian lungfish Gnathorhiza (Osteichthyes: Dipnoi);Berman;J. Paleontol.,1976
5. A new systematic arrangement of vertebrate animals;Bonaparte;Transactions of the Linnean Society,1841