Iguanodontia: Difference between revisions
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{{Automatic taxobox |
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#REDIRECT [[Iguanodont]] |
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|fossil_range= [[Late Jurassic]]–[[Late Cretaceous]], {{Fossil range|156|65.5}} |
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| image = Hadrosauroids.jpg |
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| image_width = 250px |
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| image_caption = Heads of different iguanodontians |
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| taxon = Iguanodontia |
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| authority = [[Louis Dollo|Dollo]], 1888 |
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| subdivision_ranks = Subgroups |
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| subdivision = |
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*[[Rhabdodontidae]] |
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*''[[Tenontosaurus]]'' |
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*'''Dryomorpha''' |
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**[[Dryosauridae]] |
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**'''Ankylopollexia''' |
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***[[Camptosauridae]] |
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***'''Styracosterna''' |
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****''[[Cedrorestes]]'' |
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****''[[Cumnoria]]'' |
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****''[[Dakotadon]]'' |
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****''[[Hippodraco]]'' |
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****''[[Iguanacolossus]]'' |
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****''[[Lanzhousaurus]]'' |
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****''[[Theiophytalia]]'' |
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****''[[Uteodon]]'' |
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****[[Hadrosauriformes]] |
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}} |
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'''Iguanodontia''' is a [[clade]] of herbivorous [[dinosaur]]s that lived from the mid-[[Jurassic]] to [[Late Cretaceous]]. Some members include ''[[Camptosaurus]]'', ''[[Callovosaurus]]'', ''[[Iguanodon]]'', ''[[Ouranosaurus]]'', and the [[Hadrosauridae|hadrosaurids]] or "duck-billed dinosaurs". Iguanodontians were one of the first groups of dinosaurs to be found. They are among the best known of the dinosaurs, and were among the most diverse and widespread herbivorous dinosaur groups of the Cretaceous period.<ref name=iguanacolossus>{{cite journal | last1 = McDonald | first1 = A.T. | last2 = Kirkland | first2 = J.I. | last3 = DeBlieux | first3 = D.D. | last4 = Madsen | first4 = S.K. | last5 = Cavin | first5 = J. | last6 = Milner | first6 = A.R.C. | last7 = Panzarin | first7 = L. | year = 2010 | title = New Basal Iguanodontians from the Cedar Mountain Formation of Utah and the Evolution of Thumb-Spiked Dinosaurs | url = | journal = PLoS ONE | volume = 5| issue = 11| page = e14075 | doi = 10.1371/journal.pone.0014075 | pmid = 21124919 | pmc=2989904 | editor1-last = Farke | editor1-first = Andrew Allen}}</ref> Iguanodontians were generally large animals, and some (such as ''[[Shantungosaurus]]'', which measured up to 50 ft (15 m) in length and weighed up to 8 tons) equaled the largest [[theropod|carnivorous dinosaurs]] in size. |
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==Classification== |
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Iguanodontia is often listed as an infraorder within a suborder [[Ornithopoda]], though Benton (2004) lists Ornithopoda as an infraorder and does not rank Iguanodontia. Traditionally, iguanodontians were grouped into the superfamily Iguanodontoidea and family Iguanodontidae. However, [[phylogenetic]] studies show that the traditional "iguanodontids" are a [[paraphyletic]] grade leading up to the [[hadrosaurid|hadrosaurs]] (duck-billed dinosaurs). Groups like Iguanodontoidea are sometimes still used as unranked [[clade]]s in the scientific literature, though many traditional "iguanodontids" are now included in the more inclusive group [[Hadrosauroidea]]. |
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Iguanodontia is usually defined as the most inclusive group containing ''[[Parasaurolophus walkeri]]'' but not ''[[Hypsilophodon foxii]]'' or ''[[Thescelosaurus neglectus]]'', or other combinations of species that would ultimately result in the same group in most modern analyses. The group was first defined as a clade in 2008 by [[Paul Sereno]].<ref name=sereno2005>Sereno, P.C. (2005). "Stem Archosauria Version 1.0." ''TaxonSearch''. Available: [http://www.taxonsearch.org/Archive/stem-archosauria-1.0.php http://www.taxonsearch.org/Archive/stem-archosauria-1.0.php] via the Internet. Accessed 24 November 2010.</ref> |
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Many iguanodontians have not yet been included in a large [[phylogenetic]] analyses, or are too fragmentary to place confidently. These include ''[[Barilium]]'', ''[[Bolong]]'', ''[[Bihariosaurus]]'', ''[[Delapparentia]]'', ''[[Dollodon]]'', ''[[Draconyx]]'', ''[[Kukufeldia]]'',<ref name=kukfeldia>{{cite journal | last1 = McDonald | first1 = A.T. | last2 = Barrett | first2 = P.M. | last3 = Chapman | first3 = S.D. | year = 2010 | title = A new basal iguanodont (Dinosauria: Ornithischia) from the Wealden (Lower Cretaceous) of England | url = | journal = Zootaxa | volume = 2569 | issue = | pages = 1–43 }}</ref> ''[[Hypselospinus]]'', ''[[Macrogryphosaurus]]'', ''[[Owenodon]]'', ''[[Proplanicoxa]]'',<ref name="iguanodonts2010carpenter">{{Cite journal|author=Carpenter, K. and Ishida, Y. |year=2010 |url=http://www.ucm.es/info/estratig/JIG/vol_content/vol_36_2/36_2_145_164_Carpenter.pdf |title=Early and "Middle" Cretaceous Iguanodonts in Time and Space |journal=Journal of Iberian Geology |volume=36 |issue=2 |pages=145–164 |doi=10.5209/rev_JIGE.2010.v36.n2.3}}</ref> ''[[Sellacoxa]]''<ref name="iguanodonts2010carpenter"/> and ''[[Xuwulong]]''. The simplified [[cladogram]] below follows an analysis by Andrew McDonald and colleagues, published in November 2010 with information from McDonald, 2011.<ref name=iguanacolossus/><ref name="McDonald">{{Cite journal|author=Andrew T. McDonald |year=2011 |title=The taxonomy of species assigned to ''Camptosaurus'' (Dinosauria: Ornithopoda) |url=http://www.mapress.com/zootaxa/2011/f/z02783p068f.pdf |journal=Zootaxa |volume=2783 |issue= |pages=52–68 |doi= }}</ref> |
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{{clade| style=font-size:100%;line-height:80% |
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|label1='''Iguanodontia''' |
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|1={{clade |
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|1=[[Rhabdodontidae]] |
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|2={{clade |
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|1=''[[Tenontosaurus]]'' |
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|label2=[[Dryomorpha]] |
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|2={{clade |
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|1=[[Dryosauridae]] |
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|label2=[[Ankylopollexia]] |
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|2={{clade |
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|1=''[[Camptosaurus]]'' |
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|label2=[[Styracosterna]] |
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|2={{clade |
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|1=''[[Cumnoria]]'' |
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|2=''[[Uteodon]]'' |
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|3={{clade |
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|1={{clade |
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|1=''[[Hippodraco]]'' |
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|2=''[[Theiophytalia]]'' }} |
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|2={{clade |
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|1=''[[Cedrorestes]]'' |
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|2=''[[Dakotadon]]'' |
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|3=''[[Iguanacolossus]]'' |
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|4=''[[Lanzhousaurus]]'' |
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|label5=[[Hadrosauriformes]] |
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|5={{clade |
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|1=''[[Iguanodon]]'' |
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|2=''[[Mantellisaurus]]'' |
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|3=''[[Ouranosaurus]]'' |
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|4=[[Hadrosauroidea]] }} }} }} }} }} }} }} }} }} |
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Cladogram after Butler ''et al'', 2011.<ref name=ButlerEtAl>{{Cite journal | author = Richard J. Butler, Jin Liyong, Chen Jun, Pascal Godefroit | year = 2011 | title = The postcranial osteology and phylogenetic position of the small ornithischian dinosaur ''Changchunsaurus parvus'' from the Quantou Formation (Cretaceous: Aptian–Cenomanian) of Jilin Province, north-eastern China | journal = Palaeontology | volume = 54 | issue = 3 | pages = 667–683 | doi = 10.1111/j.1475-4983.2011.01046.x }}</ref> |
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{{clade| style=font-size:100%;line-height:80% |
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|label1='''Iguanodontia''' |
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|1={{clade |
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|1=''[[Talenkauen]]'' |
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|2={{clade |
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|1=''[[Anabisetia]]'' |
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|2={{clade |
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|1=[[Rhabdodontidae]] |
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|2={{clade |
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|label1=''[[Tenontosaurus]]'' |
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|1={{clade |
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|1=''[[Tenontosaurus|T. tilletti]]'' |
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|2=''[[Tenontosaurus|T. dossi]]'' }} |
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|2={{clade |
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|1=[[Dryosauridae]] |
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|2=[[Ankylopollexia]] }} }} }} }} }} }} |
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==References== |
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{{Reflist}} |
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{{Wikispecies|Iguanodontia}} |
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{{Portal|Dinosaurs}} |
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[[Category:Iguanodonts| ]] |
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[[br:Iguanodontia]] |
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[[ca:Iguanodont (parvordre)]] |
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[[cs:Iguanodontia]] |
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[[de:Iguanodontia]] |
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[[es:Iguanodontia]] |
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[[fr:Iguanodontia]] |
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[[hr:Iguanodonti]] |
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[[it:Iguanodontia]] |
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[[hu:Iguanodontia]] |
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[[nl:Iguanodontia]] |
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[[pl:Iguanodony]] |
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[[pt:Iguanodontia]] |
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[[ru:Игуанодонты]] |
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[[simple:Iguanodont]] |
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[[sh:Iguanodonti]] |
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[[sv:Iguanodonter]] |
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[[zh:禽龍類]] |
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Revision as of 18:17, 30 April 2012
| Iguanodontia Temporal range: Late Jurassic–Late Cretaceous,
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|---|---|
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| Heads of different iguanodontians | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Ornithopoda |
| Clade: | †Iguanodontia Dollo, 1888 |
| Subgroups | |
| |
Iguanodontia is a clade of herbivorous dinosaurs that lived from the mid-Jurassic to Late Cretaceous. Some members include Camptosaurus, Callovosaurus, Iguanodon, Ouranosaurus, and the hadrosaurids or "duck-billed dinosaurs". Iguanodontians were one of the first groups of dinosaurs to be found. They are among the best known of the dinosaurs, and were among the most diverse and widespread herbivorous dinosaur groups of the Cretaceous period.[1] Iguanodontians were generally large animals, and some (such as Shantungosaurus, which measured up to 50 ft (15 m) in length and weighed up to 8 tons) equaled the largest carnivorous dinosaurs in size.
Classification
Iguanodontia is often listed as an infraorder within a suborder Ornithopoda, though Benton (2004) lists Ornithopoda as an infraorder and does not rank Iguanodontia. Traditionally, iguanodontians were grouped into the superfamily Iguanodontoidea and family Iguanodontidae. However, phylogenetic studies show that the traditional "iguanodontids" are a paraphyletic grade leading up to the hadrosaurs (duck-billed dinosaurs). Groups like Iguanodontoidea are sometimes still used as unranked clades in the scientific literature, though many traditional "iguanodontids" are now included in the more inclusive group Hadrosauroidea.
Iguanodontia is usually defined as the most inclusive group containing Parasaurolophus walkeri but not Hypsilophodon foxii or Thescelosaurus neglectus, or other combinations of species that would ultimately result in the same group in most modern analyses. The group was first defined as a clade in 2008 by Paul Sereno.[2]
Many iguanodontians have not yet been included in a large phylogenetic analyses, or are too fragmentary to place confidently. These include Barilium, Bolong, Bihariosaurus, Delapparentia, Dollodon, Draconyx, Kukufeldia,[3] Hypselospinus, Macrogryphosaurus, Owenodon, Proplanicoxa,[4] Sellacoxa[4] and Xuwulong. The simplified cladogram below follows an analysis by Andrew McDonald and colleagues, published in November 2010 with information from McDonald, 2011.[1][5]
| Iguanodontia | |
Cladogram after Butler et al, 2011.[6]
| Iguanodontia | |
References
- ^ a b McDonald, A.T.; Kirkland, J.I.; DeBlieux, D.D.; Madsen, S.K.; Cavin, J.; Milner, A.R.C.; Panzarin, L. (2010). Farke, Andrew Allen (ed.). "New Basal Iguanodontians from the Cedar Mountain Formation of Utah and the Evolution of Thumb-Spiked Dinosaurs". PLoS ONE. 5 (11): e14075. doi:10.1371/journal.pone.0014075. PMC 2989904. PMID 21124919.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ Sereno, P.C. (2005). "Stem Archosauria Version 1.0." TaxonSearch. Available: http://www.taxonsearch.org/Archive/stem-archosauria-1.0.php via the Internet. Accessed 24 November 2010.
- ^ McDonald, A.T.; Barrett, P.M.; Chapman, S.D. (2010). "A new basal iguanodont (Dinosauria: Ornithischia) from the Wealden (Lower Cretaceous) of England". Zootaxa. 2569: 1–43.
- ^ a b Carpenter, K. and Ishida, Y. (2010). "Early and "Middle" Cretaceous Iguanodonts in Time and Space" (PDF). Journal of Iberian Geology. 36 (2): 145–164. doi:10.5209/rev_JIGE.2010.v36.n2.3.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Andrew T. McDonald (2011). "The taxonomy of species assigned to Camptosaurus (Dinosauria: Ornithopoda)" (PDF). Zootaxa. 2783: 52–68.
- ^ Richard J. Butler, Jin Liyong, Chen Jun, Pascal Godefroit (2011). "The postcranial osteology and phylogenetic position of the small ornithischian dinosaur Changchunsaurus parvus from the Quantou Formation (Cretaceous: Aptian–Cenomanian) of Jilin Province, north-eastern China". Palaeontology. 54 (3): 667–683. doi:10.1111/j.1475-4983.2011.01046.x.
{{cite journal}}: CS1 maint: multiple names: authors list (link)
Wikispecies has information related to Iguanodontia.
