Isisaurus: Difference between revisions
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'''''Isisaurus''''' (named after the [[Indian Statistical Institute]]) is a genus of [[dinosaur]] from the Late [[Cretaceous]] [[Period (geology)|Period]]. ''Isisaurus'' was a [[sauropod]] (specifically a [[titanosaur]]), which lived in what is now [[India]]. |
'''''Isisaurus''''' (named after the [[Indian Statistical Institute]]) is a genus of [[dinosaur]] from the Late [[Cretaceous]] [[Period (geology)|Period]]. ''Isisaurus'' was a [[sauropod]] (specifically a [[titanosaur]]), which lived in what is now [[India]]. |
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The type specimen, ''Isisaurus colberti'', was originally described as ''Titanosaurus colberti'' by Jain and Bandyopadhyay in 1997,<ref name= "Jain">{{cite journal |url= http://paleodb.org/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=64311 |last1= Jain |first1= Sohan L. |last2= Bandyopadhyay |first2= Saswati |date= 1997 |title= New Titanosaurid (Dinosauria: Sauropoda) from the Late Cretaceous of Central India |journal= [[Journal of Vertebrate Paleontology]] |location= Norman, Okla. |publisher= University of Oklahoma |volume= 17 |number= 1 |page= 114 |accessdate= December 31, 2012}}</ref><ref name= "PD">{{cite web |url= http://paleodb.org/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=64311 |title= Isisaurus colberti |publisher= Paleobiology Database |accessdate= December 31, 2012}}</ref> but was placed in its own genus, by Wilson and Upchurch, in 2003. It had a "short, vertically-directed neck and long forearms", making it considerably different from other sauropods. Based on this specimen, ''Isisaurus'' would have grown to about 18 meters (60 feet) in length and weighed about 14,000 kg (15 [[ton]]s).<ref name="Montague">Montague J.R. (2006). "Estimates of body size and geological time of origin for 612 dinosaur genera (Saurischia, Ornithischia)", ''Florida Scientist''. 69(4): 243-257.</ref> |
The type specimen, ''Isisaurus colberti'', was originally described as ''Titanosaurus colberti'' by Jain and Bandyopadhyay in 1997,<ref name= "Jain">{{cite journal |url= http://paleodb.org/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=64311 |last1= Jain |first1= Sohan L. |last2= Bandyopadhyay |first2= Saswati |date= 1997 |title= New Titanosaurid (Dinosauria: Sauropoda) from the Late Cretaceous of Central India |journal= [[Journal of Vertebrate Paleontology]] |location= Norman, Okla. |publisher= University of Oklahoma |volume= 17 |number= 1 |page= 114 |accessdate= December 31, 2012}}</ref><ref name= "PD">{{cite web |url= http://paleodb.org/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=64311 |title= Isisaurus colberti |publisher= Paleobiology Database |accessdate= December 31, 2012}}</ref> but was placed in its own genus, by Wilson and Upchurch, in 2003.<ref>{{cite journal |url= http://www-personal.umich.edu/~wilsonja/JAW/Publications_files/Wilson%26Upchurch2003.pdf |last1= Wilson |first1= Jeffrey A. |authorlink= Jeffrey A. Wilson |last2= Upchurch |first2= P. |title= A revision of Titanosaurus Lydekker (Dinosauria – Sauropoda), the first dinosaur genus with a 'Gondwanan' distribution |journal= [[Journal of Systematic Palaeontology]] |location= Cambridge, U.K. |publisher= Cambridge University Press |volume= 1 |issue= 3 |date= 2003 |pages= 125-160 |accessdate= December 31, 2012}}</ref> It had a "bizarre" appearance with "short, vertically-directed neck and long forearms,"<ref name= "Tweet">{{cite web |url= http://www.thescelosaurus.com/saltasauridae.htm |author= Tweet, Justin |date= |title= Lithostrotia |publisher= Thescelosaurus |accessdate= December 31, 2012}}</ref> making it considerably different from other sauropods. Based on this specimen, ''Isisaurus'' would have grown to about 18 meters (60 feet) in length and weighed about 14,000 kg (15 [[ton]]s).<ref name="Montague">Montague J.R. (2006). "Estimates of body size and geological time of origin for 612 dinosaur genera (Saurischia, Ornithischia)", ''Florida Scientist''. 69(4): 243-257.</ref> |
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The skeletal material Jain and Bandyopadhyay found was "in associated and mostly articulated condition;" it included vertebrae, ribs, scapula, and other bones, though skull, hind limb and foot bones were missing.<ref name= "Jain" /> The site locality is Dongargaon Hill, which is in a [[Maastrichtian]] crevasse splay [[claystone]] in the [[Lameta Formation]] of India.<ref name= "PD" /> Dongargaon Hill is at Manjar Sumba, [[Maharashtra]]. |
''Isisaurus'' is known from much better remains than most titanosaurs.<ref name= "Tweet" /> Most of its [[postcranial]] skeleton is known. The skeletal material Jain and Bandyopadhyay found was "in associated and mostly articulated condition;" it included vertebrae, ribs, scapula, and other bones, though skull, hind limb and foot bones were missing.<ref name= "Jain" /> The site locality is Dongargaon Hill, which is in a [[Maastrichtian]] crevasse splay [[claystone]] in the [[Lameta Formation]] of India.<ref name= "PD" /> Dongargaon Hill is at Manjar Sumba, [[Maharashtra]]. |
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Fungus in [[coprolites]] believed to have been voided by ''Isisaurus'' indicate that it ate leaves from several species of tree, since these fungi are known to be [[pathogens]] which infect tree leaves.<ref name=sharmaetal2005>Sharma, N., Kar, R.K., Agarwal, A. and Kar, R. (2005). "Fungi in dinosaurian (''Isisaurus'') coprolites from the Lameta Formation (Maastrichtian) and its reflection on food habit and environment." ''Micropaleontology'', '''51'''(1): 73-82.</ref> |
Fungus in [[coprolites]] believed to have been voided by ''Isisaurus'' indicate that it ate leaves from several species of tree, since these fungi are known to be [[pathogens]] which infect tree leaves.<ref name=sharmaetal2005>Sharma, N., Kar, R.K., Agarwal, A. and Kar, R. (2005). "Fungi in dinosaurian (''Isisaurus'') coprolites from the Lameta Formation (Maastrichtian) and its reflection on food habit and environment." ''Micropaleontology'', '''51'''(1): 73-82.</ref> |
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Revision as of 02:44, 1 January 2013
| Isisaurus Temporal range: Late Cretaceous,
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Scientific classification 
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| Missing taxonomy template (fix): | Isisaurus colberti |
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Isisaurus (named after the Indian Statistical Institute) is a genus of dinosaur from the Late Cretaceous Period. Isisaurus was a sauropod (specifically a titanosaur), which lived in what is now India.
The type specimen, Isisaurus colberti, was originally described as Titanosaurus colberti by Jain and Bandyopadhyay in 1997,[1][2] but was placed in its own genus, by Wilson and Upchurch, in 2003.[3] It had a "bizarre" appearance with "short, vertically-directed neck and long forearms,"[4] making it considerably different from other sauropods. Based on this specimen, Isisaurus would have grown to about 18 meters (60 feet) in length and weighed about 14,000 kg (15 tons).[5]
Isisaurus is known from much better remains than most titanosaurs.[4] Most of its postcranial skeleton is known. The skeletal material Jain and Bandyopadhyay found was "in associated and mostly articulated condition;" it included vertebrae, ribs, scapula, and other bones, though skull, hind limb and foot bones were missing.[1] The site locality is Dongargaon Hill, which is in a Maastrichtian crevasse splay claystone in the Lameta Formation of India.[2] Dongargaon Hill is at Manjar Sumba, Maharashtra.
Fungus in coprolites believed to have been voided by Isisaurus indicate that it ate leaves from several species of tree, since these fungi are known to be pathogens which infect tree leaves.[6]
References
- ^ a b Jain, Sohan L.; Bandyopadhyay, Saswati (1997). "New Titanosaurid (Dinosauria: Sauropoda) from the Late Cretaceous of Central India". Journal of Vertebrate Paleontology. 17 (1). Norman, Okla.: University of Oklahoma: 114. Retrieved December 31, 2012.
- ^ a b "Isisaurus colberti". Paleobiology Database. Retrieved December 31, 2012.
- ^ Wilson, Jeffrey A.; Upchurch, P. (2003). "A revision of Titanosaurus Lydekker (Dinosauria – Sauropoda), the first dinosaur genus with a 'Gondwanan' distribution" (PDF). Journal of Systematic Palaeontology. 1 (3). Cambridge, U.K.: Cambridge University Press: 125–160. Retrieved December 31, 2012.
- ^ a b Tweet, Justin. "Lithostrotia". Thescelosaurus. Retrieved December 31, 2012.
- ^ Montague J.R. (2006). "Estimates of body size and geological time of origin for 612 dinosaur genera (Saurischia, Ornithischia)", Florida Scientist. 69(4): 243-257.
- ^ Sharma, N., Kar, R.K., Agarwal, A. and Kar, R. (2005). "Fungi in dinosaurian (Isisaurus) coprolites from the Lameta Formation (Maastrichtian) and its reflection on food habit and environment." Micropaleontology, 51(1): 73-82.
External links
- Saltasauridae from Thescelosaurus!
- Isisaurus in the NHM Dino Directory.
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