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Mohr, B.A.R.; Eklund, H. (2003). "Araripia florifera, a magnoliid angiosperm from the Lower Cretaceous Crato Formation (Brazil)". Review of Palaeobotany and Palynology. 126 (3–4): 279–292. Bibcode:2003RPaPa.126..279M. doi:10.1016/S0034-6667(03)00092-7.
Weishampel, D.B.; Jianu, C.-M.; Csiki, Z.; Norman, D.B. (2003). "Osteology and phylogeny of Zalmoxes (n.g.), an unusual euornithopod dinosaur from the latest Cretaceous of Romania". Journal of Systematic Palaeontology. 1 (2): 65–123. Bibcode:2003JSPal...1...65W. doi:10.1017/s1477201903001032. S2CID86339025.
Herculano M. F. de Alvarenga; Edson Guilherme (2003). "The Anhingas (Aves: Anhingidae) From the Upper Tertiary (Miocene–Pliocene) of Southwestern Amazonia". Journal of Vertebrate Paleontology. 23 (3): 614–621. Bibcode:2003JVPal..23..614A. doi:10.1671/1890. S2CID84072750.
Reisz, R.R.; Dilkes, D.W. (2003). "Archaeovenator hamiltonensis, a new varanopid from the upper carboniferous of Kansas". Canadian Journal of Earth Sciences. 40 (4): 667–678. Bibcode:2003CaJES..40..667R. doi:10.1139/e02-063. S2CID73522251.
Modesto, S.P.; Rubidge, B.S.; Welman, J. (2003). "Erratum: A replacement name for Lanthanocephalus Modesto, Rubidge and Welman 2002, not Lanthanocephalus Williams and Starmer 2000". Canadian Journal of Earth Sciences. 40 (3): 467. Bibcode:2003CaJES..40..467M. doi:10.1139/e03-900.
Alberto Boscaini; David M. Alba; Juan F. Beltrán; Salvador Moyà-Solà; Joan Madurell-Malapeira (2016). "Latest Early Pleistocene remains of Lynx pardinus (Carnivora, Felidae) from the Iberian Peninsula: Taxonomy and evolutionary implications". Quaternary Science Reviews. 143: 96–106. Bibcode:2016QSRv..143...96B. doi:10.1016/j.quascirev.2016.05.015. hdl:11336/182970.
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Poinar, G.; Brown, A. E. (2003). "A new genus of hard ticks in Cretaceous Burmese amber (Acari: Ixodida: Ixodidae)". Systematic Parasitology. 54 (3): 199–205. doi:10.1023/A:1022689325158. PMID12652071. S2CID11527194.
Makarkin, VN; Archibald, SB; Oswald, JD (2003). "New Early Eocene brown lacewings (Neuroptera: Hemerobiidae) from western North America". The Canadian Entomologist. 135 (5): 637–653. CiteSeerX10.1.1.489.5852. doi:10.4039/n02-122. S2CID53479449.
Pigg, K.B.; Manchester S.R.; Wehr W.C. (2003). "Corylus, Carpinus, and Palaeocarpinus (Betulaceae) from the Middle Eocene Klondike Mountain and Allenby Formations of Northwestern North America". International Journal of Plant Sciences. 164 (5): 807–822. doi:10.1086/376816. S2CID19802370.
Poinar, G.; Brown, A. E. (2003). "A new genus of hard ticks in Cretaceous Burmese amber (Acari: Ixodida: Ixodidae)". Systematic Parasitology. 54 (3): 199–205. doi:10.1023/A:1022689325158. PMID12652071. S2CID11527194.
Engel, Michael S.; Archibald, S. Bruce (2003). "An Early Eocene bee (Hymenoptera: Halictidae) from Quilchena, British Columbia". The Canadian Entomologist. 135: 63–69. doi:10.4039/n02-030. hdl:1808/16473. S2CID54053341.
Makarkin, VN; Archibald, SB; Oswald, JD (2003). "New Early Eocene brown lacewings (Neuroptera: Hemerobiidae) from western North America". The Canadian Entomologist. 135 (5): 637–653. CiteSeerX10.1.1.489.5852. doi:10.4039/n02-122. S2CID53479449.
Wilson, Jeffrey A.; Upchurch, Paul (2003). "A revision ofTitanosaurusLydekker (dinosauria - sauropoda), the first dinosaur genus with a 'Gondwanan' distribution". Journal of Systematic Palaeontology. 1 (3). Informa UK Limited: 125–160. doi:10.1017/s1477201903001044. ISSN1477-2019. S2CID53997295.
Weishampel, D.B.; Jianu, C.-M.; Csiki, Z.; Norman, D.B. (2003). "Osteology and phylogeny of Zalmoxes (n.g.), an unusual euornithopod dinosaur from the latest Cretaceous of Romania". Journal of Systematic Palaeontology. 1 (2): 65–123. Bibcode:2003JSPal...1...65W. doi:10.1017/s1477201903001032. S2CID86339025.
Herculano M. F. de Alvarenga; Edson Guilherme (2003). "The Anhingas (Aves: Anhingidae) From the Upper Tertiary (Miocene–Pliocene) of Southwestern Amazonia". Journal of Vertebrate Paleontology. 23 (3): 614–621. Bibcode:2003JVPal..23..614A. doi:10.1671/1890. S2CID84072750.
Reisz, R.R.; Dilkes, D.W. (2003). "Archaeovenator hamiltonensis, a new varanopid from the upper carboniferous of Kansas". Canadian Journal of Earth Sciences. 40 (4): 667–678. Bibcode:2003CaJES..40..667R. doi:10.1139/e02-063. S2CID73522251.
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Wilson, Jeffrey A.; Upchurch, Paul (2003). "A revision ofTitanosaurusLydekker (dinosauria - sauropoda), the first dinosaur genus with a 'Gondwanan' distribution". Journal of Systematic Palaeontology. 1 (3). Informa UK Limited: 125–160. doi:10.1017/s1477201903001044. ISSN1477-2019. S2CID53997295.
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