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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 1991.

Birds[]

  • Sankar Chatterjee's discovery of a possible Triassic bird, Protoavis, if genuine, would push avian origins back almost 70 million years. The find ignites controversy over the connection between dinosaurs and birds.

Newly named birds[]

Genera no longer considered to be birds[]

Dinosaurs[]

Amargasaurus

Amargasaurus cazaui

Amurosaurus-v3

Amurosaurus

SeismosaurusDB

"Seismosaurus"

Newly named dinosaurs[]

Data courtesy of George Olshevsky's dinosaur genera list[1]

Name Status Authors
Alvarezsaurus[2] Valid taxon Jose Bonaparte
Amargasaurus[3] Valid taxon Salgado
Jose Bonaparte
Amurosaurus[4] Valid taxon Bolotsky
Kurzanov
Andesaurus[5] Valid taxon Calvo
Jose Bonaparte
Becklespinax[6] Previously known as Acrocanthosaurus altispinax George Olshevsky
Eureodon[6] Junior synonym of Tenontosaurus Brown vide:
George Olshevsky
Euronychodon[7] Valid taxon Telles-Antunes
Sigogneau-Russell
Janenschia[8] Valid taxon Wild
Nuoersaurus Nomen nudum Dong Zhiming
Li X.M.
Paraiguanodon[6] Junior synonym of Bactrosaurus Brown vide:
George Olshevsky
Protognathosaurus[6] Valid taxon George Olshevsky
Rioarribasaurus[9] Nomen rejectum synonymous with Coelophysis Maryanska and Halszka Osmólska vide:
Hunt
S.G. Lucas
Seismosaurus[10] Junior synonym of Diplodocus Gillette
Tarascosaurus[11] Valid taxon Le Loeuff
Buffetaut
Taveirosaurus[12] Valid taxon Telles-Antunes
Sigogneau-Russell
Tochisaurus[13] Valid taxon Kurzanov
Halszka Osmólska
Ultrasauros[6] Chimera of Brachiosaurus and Supersaurus Jim Jensen vide:
George Olshevsky
Valdoraptor[6] Valid taxon George Olshevsky
Velocisaurus[2] Valid taxon Jose Bonaparte

References[]

  1. ^ Montague, Jeremy. "Dr. Montague's Database". http://www.barry.edu/bio300/pdf/montague%20dino%20web%20data%2012-3-2005.pdf. Retrieved on 2008-10-29.
  2. ^ a b Bonaparte, J.F. 1991. Los vertebrados fosiles de la Formacion Rio Colorado de Neuquen y cercanias, Cretacico Superior, Argentina. Revista del Museo Argentino de Ciencias Naturales "Bernardino Revidadia" Paleontologia 4 (3): pp. 17-123.
  3. ^ Salgado, L. and J.F. Bonaparte. 1991. Un nuevo sauropodo Dicraeosauridae, Amargasaurus gen. et sp. nov., de la Formacion La Amarga, Neocomiano de la Provincia del Nuequen, Argentina. Ameghiniana 28: pp. 333-346.
  4. ^ Bolotsky, Yu. L. and S.K. Kurzanov. 1991. The hadrosaurs of the Amur region. In: Geology of the Pacific Border: pp.94-103.
  5. ^ Calvo, J.O. and J.F. Bonaparte, J.F. 1991. Andesaurus delgadoi gen. et sp. nov. (Saurischia- Sauropoda), dinosaurio Titanosauridae de la Formación Río Limay (Albiano-Cenomaniano), Neuquén, Argentina. Ameghiniana 28: pp. 303-310.
  6. ^ a b c d e f Olshevsky, G. 1991. A Revision of the Parainfraclass Archosauria Cope, 1869, Excluding the Advanced Crocodylia. Mesozoic Meanderings 2 (1st printing): iv + 196 pages.
  7. ^ Telles-Antunes, M. and D. Sigogneau-Russell. 1991. Nouvelles donnees sur les Dinosaures du Cretae superieur du Portugal. Compte rendu hebdomadaire des seances de l’Academie des Sciences Paris, tomo 313, seire 2: pp. 113-119.
  8. ^ Wild, R. 1991. Janenschia n. g. robusta (E. Frass 1908) pro Tornieria robusta (E. Fraas 1908) (Reptilia, Saurischia, Sauropodomorpha). Stuttgarteer Beitrage zur Naturkude Serie B (Geologie und Paleontologie) 173: pp. 1-4.
  9. ^ Hunt, A.P. and S.G. Lucas. 1991. Rioarribasaurus, a new name for a Late Triassic dinosaur from New Mexico (USA). Palaontologische Zeitschrift 65 (3/4): pp. 191-198.
  10. ^ Gillette. D.D. 1991. Seismosaurus halli, gen. et sp. nov., a new sauropod dinosaur from the Morrison Formation (Upper Jurassic/Lower Cretaceous) of New Mexico, USA. J. Vert. Paleontol. 11 (4): pp. 417-433.
  11. ^ Le Loeuff, J. and E. Buffetaut. 1991. Tarascosaurus salluvicus, new genus new species, a theropod dinosaur from the Upper Cretaceous of southern France. GEOBIOS (Lyon) 24 (5): pp. 585-594.
  12. ^ Telles-Antunes, M. and D. Sigogneau-Russell. 1991. Nouvelles donnees sur les Dinosaures du Cretae superieur du Portugal. Compte rendu hebdomadaire des seances de l’Academie des Sciences Paris, tomo 313, seire 2: pp. 113-119.
  13. ^ Kurzanov, S.M. and H. Osmolska. 1991. Tochisaurus nemegtensis gen. et sp. n., a new troodontid (Dinosauria, Theropoda) from Mongolia. Acta Palaeont. Polonica. 36 (1): pp. 69-76.
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