1. Systematic revision of the Phorusrhacidae (Aves: Ralliformes);Alvarenga;Papéis Avulsos de Zoologia,2003
2. Presbyornis isoni and other Late Paleocene birds from North Dakota;Benson;Smithsonian Contributions to Paleobiology,1999
3. Early origins of modern birds and mammals: molecules vs. morphology;Benton;BioEssays,1999
4. A well-preserved ‘charadriiform-like’ fossil bird from the Lower Eocene Fur Formation of Denmark;Bertelli;Palaeontology,2009
5. Fossil gap analysis supports early Tertiary origin of trophically diverse avian orders;Bleiweiss;Geology,1998