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            List of years in paleontology       (table)
 1994 .  1995 .  1996 .  1997  . 1998  . 1999  . 2000 
2001 2002 2003 -2004- 2005 2006 2007
 2008 .  2009 .  2010 .  2011  . 2012  . 2013  . 2014 

Paleontology, palaeontology or palæontology (from Greek: paleo, "ancient"; ontos, "being"; and logos, "knowledge") is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, coprolites, palynomorphs and chemical residues. Because mankind has encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred in the year 2004.


Newly named dinosaurs[]

Name Status Authors Notes Images
"Astrodontaurus"[1] Junior synonym of Astrodon

Johnston vide:

  • Kranz
Mei long


Atrociraptor[2] Valid taxon
  • Currie
  • Varricchio
Bissektipelta[3] Valid taxon
  • Parish
  • Barrett
Bonatitan[4] Valid taxon
  • Martinelli
  • Forasiepi
Bonitasaura[5] Valid taxon
  • Apesteguía
Borealosaurus[6] Valid taxon
  • You
  • Ji Q.
  • Lamanna
  • Li J.
  • Li Y. X.
Crosbysaurus[7] Valid non-dinosaurian taxon.
  • Heckert
Dilong[8] Valid taxon
  • Wang X.
  • Zhao Q.
  • Jia C.
Ekrixinatosaurus[9] Valid taxon
  • Calvo
  • Rubilar-Rogers
  • Moreno
Graciliraptor[10] Valid taxon
  • Wang X.
Huaxiagnathus[11] Valid taxon
  • Ji Q.
  • Gao K.
Kerberosaurus[12] Valid taxon
  • Bolotsky
  • Godefroit
Limaysaurus[13] Valid taxon
  • Salgado
  • Garrido
  • S. E. Cocca
  • J. R. Cocca
Mei[14] Valid taxon
Mirischia[15] Valid taxon
  • Frey
"Nemegtia"[16] Preoccupied name. Renamed Nemegtomaia.
  • Tomida
  • Azuma
Prenoceratops[17] Valid taxon
  • Chinnery
"Protecovasaurus"[18] Valid non-dinosaurian taxon.
  • Heckert
Rugops[19] Valid taxon
  • Conrad
Sinusonasus[20] Valid taxon
  • Wang X.
Spinostropheus[21] Valid taxon
  • Conrad
Suuwassea[22] Valid taxon
  • Harris
Talenkauen[23] Valid taxon
  • Novas
  • Cambiaso
  • Ambrosio
Tazoudasaurus[24] Valid taxon
  • Allain
  • Aquesbi
  • Dejax
  • C. Meyer
  • Monbaron
Unaysaurus[25] Valid taxon
  • Leal
  • Azevedo
  • Kellner
  • Da Rosa


  1. ^ Johnston, 1858 vide Kranz, P.M. 2004. Astrodon rediscovered: America's first sauropod. The Mosasaur 7: pp. 95-103.
  2. ^ Currie, P.J. and D.J. Varricchio. 2004. A new dromaeosaurid from the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta, Canada. In: Feathered Dragons: Studies on the Transition from Dinosaurs to Birds (P.J. Currie, E.B. Koppelhus, M.A. Shugar, and J.L. Wright, eds.). Indiana University Press, Bloomington, IA: pp. 112-132.
  3. ^ Parish, J. and P. Barrett. 2004. A reappraisal of the ornithischian dinosaur Amtosaurus magnus Kurzanov and Tumanova 1978, with comments of the staus of A. archibaldi Averianov 2002. Can. J. Earth Sci. 41 (3): pp. 299-306.
  4. ^ Martinelli, A.G. and A.M. Forasiepi. 2004. Late Cretaceous vertebrates from Bajo de Santa Rosa (Allen Formation), Rio Negro province, Argentina, with the description of a new sauropod dinosaur (Titanosauridae). Revista del Museo Argentino de Ciencias Naturales Nueva Serie. 6 (2): pp. 257- 305.
  5. ^ Apesteguia, S. 2004. Bonitasaura salgadoi gen. et sp. nov.: a beaked sauropod from the Late Cretaceous of Patagonia. Naturwissenschaften Doi: 10.1007/s00114-004-0560-6 Issue: Online First.
  6. ^ You, H., Q. Ji, M.C. Lamanna, J. Li, and Y. LI. 2004. A titanosaurian sauropod dinosaur with opisthocoelous caudal vertebrae from the Early Late Cretaceous of Liaoning Province, China. Acta Geologica Sinica 78 (4): pp. 907-911.
  7. ^ Heckert, A.B. 2004. Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern U.S.A. New Mexico Museum of Natural History and Science, Bulletin 27: 170 pages.
  8. ^ Xu, X., M.A. Norell, X. Kuang, X. Wang, Q. Zhao, and C. Jia. 2004. Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids. Nature 431: pp. 680-684.
  9. ^ Calvo, J.O., D. Rubilar-Roger, and K. Moreno. 2004. A new Abelisauridae (Dinosauria: Theropoda) from northwest Patagonia. Ameghiniana (Rev. Asoc.Paleontol. Argent.) - 41 (4):pp. 555-563. Buenos Aires, 30-12-2004.
  10. ^ Sereno, P.C. 2000. The fossil record, systematics and evolution of pachycephalosaurs and ceratopsians from Asia. In The Age of Dinosaurs in Russia and Mongolia (M.J. Benton, M.A. Shishkin, D.M. Unwin, and E.N. Kurochkin, eds.). Cambridge University Press, New York: pp. 480-516.
  11. ^ Hwang, S.H., M.A. Norell, Q. Ji, and K. Gao. 2004. large compognathid from the Early Cretaceous Yixian Formation of China. Journal of Systematic Palaeontology, 2(1): pp. 13-30.
  12. ^ Bolotsky, Yu.L. and P. Godefroit. 2004. A new hadrosaurine dinosaur from the Late Cretaceous of far Eastern Russia. Journal of Vertebrate Paleontology 24 (2) pp. :351-365.
  13. ^ Salgado, L., A. Garrido, S.E. Cocca, and J.R. Cocca. 2004. Lower Cretaceous rebbachisaurid sauropods from Cerro Aguada del Leon (Lohan Cura Formation), Neuquen Province, northwestern Patagonia, Argentina. Journal of Vertebrate Paleontology 24 (4): pp. 903-912.
  14. ^ Xu, X. and M.A. Norell. 2004. A new troodontid dinosaur from China with avian-like sleeping posture. Nature 431: pp. 838-841.
  15. ^ Naish, D., D.M. Martill, and E. Frey. 2004. Ecology, systematics and biogeographical relationships of dinosaurs, including a new theropod, from the Santana Formation (?Albian, Early Cretaceous) of Brazil. Historical Biology (2004): pp. 1-14.
  16. ^ Lu, J., Y. Tomida, Y. Azuma, Z.-M. Dong, and Y.- N. Lee. 2004. New oviraptorid dinosaur (Dinosauria: Oviraptorosauria) from the Nemegt Formation of southwestern Mongolia. Bulletin of the National Science Museum, Tokyo (Series C) 30: pp. 95-130.
  17. ^ Chinnery, B.J. 2004. Description of Prenoceratops pieganensis gen et sp. nov. (Dinosauria: Neoceratopsia) from the Two Medicine Formation of Montana. Journal of Vertebrate Paleontology 24 (3): pp. 572-590.
  18. ^ Heckert, A.B. 2004. Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern U.S.A. New Mexico Museum of Natural History and Science Bulletin 27: 170 pages.
  19. ^ Sereno, P.C., J.A. Wilson, and J.L. Conrad. 2004. New dinosaurs link southern landmasses in the Mid-Cretaceous. Proceedings of the Royal Society of London (Series B) published online: 6 pages.
  20. ^ Xu, X. and X. Wang. 2004. A new troodontid (Theropoda: Troodontidae) from the Lower Cretaceous Yixian Formation of Western Liaoning, China. Acte Geologica Sinica 78 (1): pp. 22-26.
  21. ^ Sereno, P.C., J.A. Wilson, and J.L. Conrad. 2004. New dinosaurs link southern landmasses in the Mid-Cretaceous. Proceedings of the Royal Society of London (Series B) published online: 6 pages.
  22. ^ Harris, J.D., and P. Dodson, P. 2004. A new diplodocoid sauropod dinosaur from the Upper Jurassic Morrison Formation of Montana, USA. Acta Palaeontologica Polonica 49 (2): pp. 197- 210.
  23. ^ Novas, F.E., A.V. Cambiaso, and A. Ambrosio. 2004. A new basal iguanodontian (Dinosauria, Ornithischia) from the Upper Cretaceous of Patagonia. Ameghiniana 41 (1): pp. 75-85.
  24. ^ Allain, R., N. Aquesbi, J. Dejax, C. Meyer, M. Monbaron, C. Montenat, P. Richir, M. Rochdy, D. Russell, and P. Taquet. 2004. A basal sauropod dinosaur from the Early Jurassic of Morocco. Comptes Rendus Palevol 3: pp. 199-208.
  25. ^ Leal., L.A., S.A.K. Azevedo, A.W.A. Kellner, and A.A.S. da Rosa. 2004. A new early dinosaur (Sauropodomorpha) from the Caturrita Formation (Late Triassic), Paraná Basin, Brazil. Zootaxa 690: pp. 1-24.