2004 in paleontology

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Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils.^[1] This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have 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 or were published in the year 2004.

Protozoa

New taxa

Name	Status	Authors	Age	Unit	Location	Notes	Images
Paleoleishmania^[2]	Valid	Poinar & Poinar	Albian	Burmese amber, Myanmar	Myanmar	Oldest record of the protozoan family Trypanosomatidae

Fungi

newly named

Name	Status	Authors	Age	Unit	Location	Notes	Images
Appianoporites^[3]	Valid	Smith Currah Stockey	Eocene	Appian Way Flora.	Canada	Extinct bracket fungus
Quatsinoporites^[3]	Valid	Smith Currah Stockey	Barremian (Cretaceous)	Longarm Formation.	Canada	Extinct bracket fungus.

Plants

newly named

Name	Status	Authors	Age	Unit	Location	Notes	Images
Neviusia dunthornei^[4]	Valid	DeVore Moore Pigg Wehr	Ypresian (Early Eocene)	Allenby Formation.	Canada	oldest and only extinct species of Neviusia

Arthropoda

newly named arachnids

Name	Novelty	Status	Authors	Age	Unit	Location	Notes	Images
?Anyphops cortex^[5]	sp nov	jr synonym^[6]	Wunderlich	Unknown	Madagascar copal	Madagascar	jr Synonym of Garcorops jadis
Garcorops jadis^[7]	sp nov	Valid	Bosselaers	Unknown	Madagascar copal	Madagascar	Possibly extant, but copal age is not determined

Newly named insects

Name	Novelty	Status	Authors	Age	Unit	Location	Notes
Afromyrma^[8]	Gen et sp nov	valid	Dlussky, Brothers & Rasnitsyn	Turonian		Botswana	A Myrmicin ant, type species A. petrosa
Afropone^[8]	Gen et sp nov	valid	Dlussky, Brothers & Rasnitsyn	Turonian		Botswana	A ponerin ant, two species
Microberotha^[9]	Gen et sp nov	Valid	Archibald	Ypresian	Hat Creek Amber	Canada	A Berothid lacewing

Archosauromorphs

Newly named dinosaurs

Data courtesy of George Olshevsky's dinosaur genera list.^[10]

Name	Status	Authors		Images
"Astrodontaurus"^[11]	Junior synonym of Astrodon	Johnston vide:	Kranz	Huaxiagnathus Huaxiagnathus Huaxiagnathus Rugops
Atrociraptor^[12]	Valid taxon	Currie	Varricchio
Bissektipelta^[13]	Valid taxon	Parish	Barrett
Bonatitan^[14]	Valid taxon	Martinelli	Forasiepi
Bonitasaura^[15]	Valid taxon	Apesteguía
Borealosaurus^[16]	Valid taxon	You Ji Q. Lamanna	Li J. Li Y. X.
Dilong^[17]	Valid taxon	Xu Xing Mark Norell Kuang	Wang X. Zhao Q. Jia C.
Ekrixinatosaurus^[18]	Valid taxon	Calvo Rubilar-Rogers	Moreno
Graciliraptor^[19]	Valid taxon	Xu Xing	Wang X.
Huaxiagnathus^[20]	Valid taxon	Hwang Mark Norell	Ji Q. Gao K.
Kerberosaurus^[21]	Valid taxon	Bolotsky	Godefroit
Limaysaurus^[22]	Valid taxon	Salgado Garrido	S. E. Cocca J. R. Cocca
Mei^[23]	Valid taxon	Xu Xing	Mark Norell
Mirischia^[24]	Valid taxon	Darren Naish Martill	Frey
"Nemegtia"^[25]	Preoccupied name. Renamed Nemegtomaia.	Lü Tomida Azuma	Dong Zhiming Lee Szczechura
Otogosaurus	Valid taxon	Zhao X.	Tan L.
Prenoceratops^[26]	Valid taxon	Chinnery
Rugops^[27]	Valid taxon	Paul Sereno Jeffrey A. Wilson.	Conrad
Sinusonasus^[28]	Valid taxon	Xu Xing	Wang X.
Spinostropheus^[27]	Valid taxon	Paul Sereno Jeffrey A. Wilson.	Conrad
Suuwassea^[29]	Valid taxon	Harris	Peter Dodson
Talenkauen^[30]	Valid taxon	Novas Cambiaso	Ambrosio
Tazoudasaurus^[31]	Valid taxon	Allain Aquesbi Dejax C. Meyer Monbaron	Montenat Richir Rochdy Dale A. Russell Philippe Taquet
Unaysaurus^[32]	Valid taxon	Leal Azevedo	Kellner Da Rosa

Other archosauromorphs

Name	Status	Authors		Notes	Images
"Crosbysaurus"^[33]	Valid non-dinosaurian taxon.	Heckert
"Protecovasaurus"^[34]	Valid non-dinosaurian taxon.	Heckert

Plesiosaurs

New taxa

Name	Status	Authors		Notes
Plesiopterys	Valid	O'Keefe

Pterosaurs

New taxa

Name	Status	Authors	Age	Unit	Location	Notes
Avgodectes	Valid	Peters	Early Cretaceous	Yixian Formation	China	A pterosaur hatchling.
Cacibupteryx	Valid	Gasparini Fernández de la Fuente	Late Jurassic (Oxfordian)	Jagua Formation	Cuba	A rhamphorhynchid.
"Daitingopterus"	Valid	Maisch Matzke Ge Sun	Late Jurassic (Tithonian)	Solnhofen Limestone	Germany	A germanodactylid.
Lonchognathosaurus	Valid	Maisch, M.W., Matzke, A.T., and Ge Sun	Early Cretaceous (Aptian)	Lianmuqin Formation	China	A dsungaripterid.

Synapsids

Non-mammalian

Name	Status	Authors	Location
Ianthodon^[35]	Valid	Kissel Reisz	USA
Lobalopex^[36]	Valid	Sidor Hopson Keyser	South Africa
Progalesaurus^[37]	Valid	Sidor Smith	South Africa
Pyozia^[38]	Valid	Anderson Reisz	Russia
Rewaconodon^[39]	Valid	Datta Das Luo	India

References

^ Gini-Newman, Garfield; Graham, Elizabeth (2001). Echoes from the past: world history to the 16th century. Toronto: McGraw-Hill Ryerson Ltd. ISBN 9780070887398. OCLC 46769716.
^ Poinar, G. (2008). "Lutzomyia adiketis sp. n. (Diptera: Phlebotomidae), a vector of Paleoleishmania neotropicum sp. n. (Kinetoplastida: Trypanosomatidae) in Dominican amber". Parasites & Vectors. 1 (1): 22. doi:10.1186/1756-3305-1-22. PMC 2491605. PMID 18627624.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ ^a ^b Smith, S.Y.; Currah, R.S.; Stockey, R.A. (2004). "Cretaceous and Eocene poroid hymenophores from Vancouver Island, British Columbia". Mycologia. 96 (1): 180–186. doi:10.2307/3762001. JSTOR 3762001. PMID 21148842.
^ DeVore, M.L.; Moore, S.M.; Pigg, K.B.; Wehr, W.C. (2004). "Fossil Neviusia leaves (Rosaceae: Kerrieae) from the Lower Middle Eocene of Southern British Columbia". Rhodora. 12 (927): 197–209. JSTOR 23314752.
^ Wunderlich, J. (2004). "Fossil spiders in amber and copal. Conclusions, revisions, new taxa and family diagnoses of fossil and extant taxa". Beiträge zur Araneologie. 3AB: 1–1908.
^ Penney, D.; Ono, H.; Selden, P.A. (2005). "A new synonymy for the Madagascan copal spider fauna (Araneae, Selenopidae)" (PDF). Journal of Afrotropical Zoology. 2: 41–44.
^ Bosselaers, J. (2004). "A new Garcorops species from Madagascar copal (Araneae: Selenopidae)" (PDF). Zootaxa. 445: 1–7.
^ ^a ^b Dlussky, G. M.; Brothers, D. J.; Rasnitsyn, A. P. (2004). "The first Late Cretaceous ants (Hymenoptera: Formicidae) from southern Africa, with comments on the origin of the Myrmicinae". Insect Systematics and Evolution. 35: 1–13.
^ Archibald, S.B.; Makarkin, V.N. (2004). "New genus of minute Berothidae (Neuroptera) from Early Eocene amber of British Columbia" (PDF). The Canadian Entomologist. 136: 61–76. doi:10.4039/n03-043.
^ Olshevsky, George. "Dinogeorge's Dinosaur Genera List". Retrieved 2008-08-07.
^ Johnston, 1858 vide Kranz, P.M. 2004. Astrodon rediscovered: America's first sauropod. The Mosasaur 7: pp. 95-103.
^ 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.
^ Parish, J.; Barrett, Paul M (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): 299–306. doi:10.1139/e03-101.
^ Martinelli, A.G. (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): 257–305.
^ Apestegua, Sebastian (2004). "Bonitasaura salgadoi gen. et sp. nov.: a beaked sauropod from the Late Cretaceous of Patagonia". Naturwissenschaften. 91 (10): 493–7. doi:10.1007/s00114-004-0560-6. PMID 15729763.
^ You, H.; Ji, Q.; Lamanna, M.C.; Li, J. (2004). "A titanosaurian sauropod dinosaur with opisthocoelous caudal vertebrae from the Early Late Cretaceous of Liaoning Province, China". Acta Geologica Sinica. 78 (4): 907–911.
^ Xu X., Norell M.A., Kuang X., Wang X., Zhao Q., Jia C. (2004). "Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids". Nature. 431 (7009): 680–684. doi:10.1038/nature02855. PMID 15470426.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ Calvo, J.O.; Rubilar-Roger, D.; Moreno, K. (2004). "A new Abelisauridae (Dinosauria: Theropoda) from northwest Patagonia". Ameghiniana (Rev. Asoc.Paleontol. Argent.). 41 (4): 555–563.
^ 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.
^ Hwang S.H., Norell M.A., Ji Q., Gao K. (2004). "large compognathid from the Early Cretaceous Yixian Formation of China". Journal of Systematic Palaeontology. 2 (1): 13–30. doi:10.1017/S1477201903001081.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ 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.
^ Salgado, L.; Garrido, A.; Cocca, S.E.; Cocca, J.R. (2004). "Lower Cretaceous rebbachisaurid sauropods from Cerro Aguada del Leon (Lohan Cura Formation), Neuquen Province, northwestern Patagonia, Argentina". Journal of Vertebrate Paleontology. 24 (4): 903–912. doi:10.1671/0272-4634(2004)024[0903:LCRSFC]2.0.CO;2.
^ Xu X., Norell M.A. (2004). "A new troodontid dinosaur from China with avian-like sleeping posture". Nature. 431 (7010): 838–841. doi:10.1038/nature02898. PMID 15483610.
^ 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.
^ 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.
^ 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): 572–590. doi:10.1671/0272-4634(2004)024[0572:DOPPGE]2.0.CO;2.
^ ^a ^b 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.
^ 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.
^ 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.
^ 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.
^ 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.
^ 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.
^ 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.
^ 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.
^ Kissel, R.A. & Reisz, R.R. "Synapsid fauna of the Upper Pennsylvanian Rock Lake Shale near Garnett, Kansas and the diversity pattern of early amniotes". In G. Arratia, M. V. H. Wilson & R. Cloutier (eds.). Recent Advances in the Origin and Early Radiation of Vertebrates. Verlag Dr. Friedrich Pfeil, 2004.
^ Sidor, C.A., Hopson, J.A. and Keyser, A.W. (2004). "A new burnetiamorph theraspid from the Teekloof Formation, Permian, of South Africa". Journal of Vertebrate Paleontology. 24 (4): 938–950. doi:10.1671/0272-4634(2004)024[0938:ANBTFT]2.0.CO;2.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ Sidor, C.A. and Smith, R.M.H. (2004). "A new galesaurid (Therapsida: Cynodontia) from the Lower Triassic of South Africa". Palaeontology. 47 (3): 535–556. doi:10.1111/j.0031-0239.2004.00378.x.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ Anderson, J.S. and Reisz, R.R. (2004). "Pyozia mesenensis, a new, small varanopid (Synapsida, Eupelycosauria) from Russia: "Pelycosaur" diversity in the Middle Permian". Journal of Vertebrae Paleontology. 24 (1): 173–179. doi:10.1671/1940-13.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ Datta, P.M., Das, D.P. and Luo, Z.-X. (2004). "A Late Triassic dromatheriid (Synapsida: Cynodontia) from India". Annals of Carnegie Museum. 73 (2): 12–24.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[1] Gini-Newman, Garfield; Graham, Elizabeth (2001). Echoes from the past: world history to the 16th century. Toronto: McGraw-Hill Ryerson Ltd. ISBN 9780070887398. OCLC 46769716.

[Poinar2008-2] Poinar, G. (2008). "Lutzomyia adiketis sp. n. (Diptera: Phlebotomidae), a vector of Paleoleishmania neotropicum sp. n. (Kinetoplastida: Trypanosomatidae) in Dominican amber". Parasites & Vectors. 1 (1): 22. doi:10.1186/1756-3305-1-22. PMC 2491605. PMID 18627624.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[Smith2004-3] Smith, S.Y.; Currah, R.S.; Stockey, R.A. (2004). "Cretaceous and Eocene poroid hymenophores from Vancouver Island, British Columbia". Mycologia. 96 (1): 180–186. doi:10.2307/3762001. JSTOR 3762001. PMID 21148842.

[DeVore2004-4] DeVore, M.L.; Moore, S.M.; Pigg, K.B.; Wehr, W.C. (2004). "Fossil Neviusia leaves (Rosaceae: Kerrieae) from the Lower Middle Eocene of Southern British Columbia". Rhodora. 12 (927): 197–209. JSTOR 23314752.

[Wunderlich2004-5] Wunderlich, J. (2004). "Fossil spiders in amber and copal. Conclusions, revisions, new taxa and family diagnoses of fossil and extant taxa". Beiträge zur Araneologie. 3AB: 1–1908.

[Penney2005-6] Penney, D.; Ono, H.; Selden, P.A. (2005). "A new synonymy for the Madagascan copal spider fauna (Araneae, Selenopidae)" (PDF). Journal of Afrotropical Zoology. 2: 41–44.

[Bosselaers2004-7] Bosselaers, J. (2004). "A new Garcorops species from Madagascar copal (Araneae: Selenopidae)" (PDF). Zootaxa. 445: 1–7.

[Dlussky2004-8] Dlussky, G. M.; Brothers, D. J.; Rasnitsyn, A. P. (2004). "The first Late Cretaceous ants (Hymenoptera: Formicidae) from southern Africa, with comments on the origin of the Myrmicinae". Insect Systematics and Evolution. 35: 1–13.

[A&M2004-9] Archibald, S.B.; Makarkin, V.N. (2004). "New genus of minute Berothidae (Neuroptera) from Early Eocene amber of British Columbia" (PDF). The Canadian Entomologist. 136: 61–76. doi:10.4039/n03-043.

[ddinogeorge-10] Olshevsky, George. "Dinogeorge's Dinosaur Genera List". Retrieved 2008-08-07.

[11] Johnston, 1858 vide Kranz, P.M. 2004. Astrodon rediscovered: America's first sauropod. The Mosasaur 7: pp. 95-103.

[12] 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.

[13] Parish, J.; Barrett, Paul M (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): 299–306. doi:10.1139/e03-101.

[14] Martinelli, A.G. (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): 257–305.

[15] Apestegua, Sebastian (2004). "Bonitasaura salgadoi gen. et sp. nov.: a beaked sauropod from the Late Cretaceous of Patagonia". Naturwissenschaften. 91 (10): 493–7. doi:10.1007/s00114-004-0560-6. PMID 15729763.

[16] You, H.; Ji, Q.; Lamanna, M.C.; Li, J. (2004). "A titanosaurian sauropod dinosaur with opisthocoelous caudal vertebrae from the Early Late Cretaceous of Liaoning Province, China". Acta Geologica Sinica. 78 (4): 907–911.

[17] Xu X., Norell M.A., Kuang X., Wang X., Zhao Q., Jia C. (2004). "Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids". Nature. 431 (7009): 680–684. doi:10.1038/nature02855. PMID 15470426.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[18] Calvo, J.O.; Rubilar-Roger, D.; Moreno, K. (2004). "A new Abelisauridae (Dinosauria: Theropoda) from northwest Patagonia". Ameghiniana (Rev. Asoc.Paleontol. Argent.). 41 (4): 555–563.

[19] 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.

[20] Hwang S.H., Norell M.A., Ji Q., Gao K. (2004). "large compognathid from the Early Cretaceous Yixian Formation of China". Journal of Systematic Palaeontology. 2 (1): 13–30. doi:10.1017/S1477201903001081.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[21] 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.

[22] Salgado, L.; Garrido, A.; Cocca, S.E.; Cocca, J.R. (2004). "Lower Cretaceous rebbachisaurid sauropods from Cerro Aguada del Leon (Lohan Cura Formation), Neuquen Province, northwestern Patagonia, Argentina". Journal of Vertebrate Paleontology. 24 (4): 903–912. doi:10.1671/0272-4634(2004)024[0903:LCRSFC]2.0.CO;2.

[23] Xu X., Norell M.A. (2004). "A new troodontid dinosaur from China with avian-like sleeping posture". Nature. 431 (7010): 838–841. doi:10.1038/nature02898. PMID 15483610.

[24] 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.

[25] 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.

[26] 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): 572–590. doi:10.1671/0272-4634(2004)024[0572:DOPPGE]2.0.CO;2.

[Sereno_P.C-27] 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.

[28] 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.

[29] 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.

[30] 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.

[31] 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.

[32] 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.

[33] 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.

[34] 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.

[35] Kissel, R.A. & Reisz, R.R. "Synapsid fauna of the Upper Pennsylvanian Rock Lake Shale near Garnett, Kansas and the diversity pattern of early amniotes". In G. Arratia, M. V. H. Wilson & R. Cloutier (eds.). Recent Advances in the Origin and Early Radiation of Vertebrates. Verlag Dr. Friedrich Pfeil, 2004.

[36] Sidor, C.A., Hopson, J.A. and Keyser, A.W. (2004). "A new burnetiamorph theraspid from the Teekloof Formation, Permian, of South Africa". Journal of Vertebrate Paleontology. 24 (4): 938–950. doi:10.1671/0272-4634(2004)024[0938:ANBTFT]2.0.CO;2.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[37] Sidor, C.A. and Smith, R.M.H. (2004). "A new galesaurid (Therapsida: Cynodontia) from the Lower Triassic of South Africa". Palaeontology. 47 (3): 535–556. doi:10.1111/j.0031-0239.2004.00378.x.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[38] Anderson, J.S. and Reisz, R.R. (2004). "Pyozia mesenensis, a new, small varanopid (Synapsida, Eupelycosauria) from Russia: "Pelycosaur" diversity in the Middle Permian". Journal of Vertebrae Paleontology. 24 (1): 173–179. doi:10.1671/1940-13.{{cite journal}}: CS1 maint: multiple names: authors list (link)

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