It was discovered in strata dating to the Norianstage, around 210 million years ago.[2][3] It is estimated to have reached 10–12 metres (33–39 ft) long and weighed over 7 metric tons (7.7 short tons), possibly up to 8–10 metric tons (8.8–11.0 short tons), in maximum body mass.[4][5][6][7]
Classification
Exhibit in Singapore
A cladogram after Pol, Garrido & Cerda, 2011,[8] illustrates a possible placing of Lessemsaurus and Antetonitrus in Sauropodomorpha:
^Weishampel, David B; et al., 2004. "Dinosaur distribution (Late Triassic, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 527–528. ISBN0-520-24209-2.
^Pol, D.; Powell, J. E. (2007). "New information on Lessemsaurus sauropoides (Dinosauria: Sauropodomorpha) from the Upper Triassic of Argentina". Special Papers in Palaeontology. 77: 223–243.
^Diego Pol, Alberto Garrido, Ignacio A. Cerda (2011). "A New Sauropodomorph Dinosaur from the Early Jurassic of Patagonia and the Origin and Evolution of the Sauropod-type Sacrum". PLOS ONE. 6 (1): e14572. Bibcode:2011PLoSO...614572P. doi:10.1371/journal.pone.0014572. PMC3027623. PMID 21298087.{{cite journal}}: CS1 maint: uses authors parameter (link)
^Foelix, Rainer; Pabst, Ben; Kindlimann, René (2011). "Die Saurier in Frick" (PDF). Mitteilungen der aargauischen Naturforschenden Gesellschaft. 37. doi:10.5169/seals-283430.
^Apaldetti, C.; Martínez, R.N.; Cerda, I.A.; Pol, D.; Alcober, O. (2018). "An early trend towards gigantism in Triassic sauropodomorph dinosaurs". Nature Ecology & Evolution. 2 (8): 1227–1232. doi:10.1038/s41559-018-0599-y.
^McPhee, Blair W.; Benson, Roger B.J.; Botha-Brink, Jennifer; Bordy, Emese M. & Choiniere, Jonah N. (2018). "A giant dinosaur from the earliest Jurassic of South Africa and the transition to quadrupedality in early sauropodomorphs". Current Biology. 28 (19): 3143–3151.e7. doi:10.1016/j.cub.2018.07.063. PMID 30270189.
^Diego Pol, Alberto Garrido, Ignacio A. Cerda (2011). "A New Sauropodomorph Dinosaur from the Early Jurassic of Patagonia and the Origin and Evolution of the Sauropod-type Sacrum". PLOS ONE. 6 (1): e14572. Bibcode:2011PLoSO...614572P. doi:10.1371/journal.pone.0014572. PMC3027623. PMID 21298087.{{cite journal}}: CS1 maint: uses authors parameter (link)
^Apaldetti; Martínez, Ricardo N.; Cerda, Ignatio A.; Pol, Diego; Alcober, Oscar (2018). "An early trend towards gigantism in Triassic sauropodomorph dinosaurs". Nature Ecology & Evolution. 2 (8): 1227–1232. doi:10.1038/s41559-018-0599-y. hdl:11336/89332. PMID 29988169. S2CID 49669597.
^Rauhut, O. W. M.; Holwerda, F. M.; Furrer, H. (2020). "A derived sauropodiform dinosaur and other sauropodomorph material from the Late Triassic of Canton Schaffhausen, Switzerland". Swiss Journal of Geosciences. 113 (1): 8. doi:10.1186/s00015-020-00360-8. S2CID 220294939.
External links
Media related to Lessemsaurus at Wikimedia Commons
lessemsaurus, extinct, genus, sauropod, dinosaur, belonging, lessemsauridae, temporal, range, norian, preꞒ, nscientific, classificationkingdom, animaliaphylum, chordataclade, dinosauriaclade, saurischiaclade, sauropodomorphaclade, sauropodaclade, lessemsaurida. Lessemsaurus is an extinct genus of sauropod dinosaur belonging to Lessemsauridae LessemsaurusTemporal range Norian 228 208 5 Ma PreꞒ Ꞓ O S D C P T J K Pg NScientific classificationKingdom AnimaliaPhylum ChordataClade DinosauriaClade SaurischiaClade SauropodomorphaClade SauropodaClade LessemsauridaeGenus LessemsaurusBonaparte 1999Species L sauropoidesBinomial name Lessemsaurus sauropoidesBonaparte 1999 Contents 1 Naming and description 2 Classification 3 References 4 External linksNaming and description EditThe type species L sauropoides was formally described by Jose Fernando Bonaparte in 1999 in honor of Don Lessem a writer of popular science books It was found in the Los Colorados Formation of the Ischigualasto Villa Union Basin in La Rioja Province Argentina 1 It was discovered in strata dating to the Norian stage around 210 million years ago 2 3 It is estimated to have reached 10 12 metres 33 39 ft long and weighed over 7 metric tons 7 7 short tons possibly up to 8 10 metric tons 8 8 11 0 short tons in maximum body mass 4 5 6 7 Classification Edit Exhibit in Singapore A cladogram after Pol Garrido amp Cerda 2011 8 illustrates a possible placing of Lessemsaurus and Antetonitrus in Sauropodomorpha Sauropodomorpha SaturnaliaPantydracoThecodontosaurusEfraasiaRuehleiaPlateosaurusMassopoda RiojasaurusMassospondylusColoradisaurusLufengosaurusGyposaurusYunnanosaurusAnchisauria AnchisaurusAardonyxLeonerasaurusMelanorosaurusSauropoda AntetonitrusLessemsaurusKotasaurusVulcanodonEusauropodaIn 2018 Apaldetti et al recovered it as part of a clade they named Lessemsauridae after Lessemsaurus Their cladogram is reproduced below 9 Sauropodiformes MussaurusAardonyxSefapanosaurusMelanorosauridae CamelotiaMelanorosaurusSauropoda Lessemsauridae AntetonitrusIngentiaLessemsaurusBlikanasaurusGongxianosaurusPulanesauraGravisauriaThe following cladogram shows the position of Lessemsaurus outside of Sauropoda according to Oliver W M Rauhut and colleagues 2020 10 Massopoda EucnemesaurusRiojasaurus SarahsaurusMassospondylidae YunnanosaurusJingshanosaurus SeitaadColoradisaurusGlacialisaurus LufengosaurusMassospondylus AdeopapposaurusLeyesaurusSauropodiformes XingxiulongAnchisaurusLeonerasaurus Mussaurus AardonyxSefapanosaurusMeroktenosMelanorosaurusCamelotiaLessemsaurusAntetonitrus IngentiaBlikanasaurusPulanesauraGongxianosaurusSchleitheimiaIsanosaurusTazoudasaurusSauropoda References Edit Weishampel David B et al 2004 Dinosaur distribution Late Triassic South America In Weishampel David B Dodson Peter and Osmolska Halszka eds The Dinosauria 2nd Berkeley University of California Press Pp 527 528 ISBN 0 520 24209 2 Bonaparte J F 1999 Evolucion de las vertebras presacras en Sauropodomorpha Ameghiniana 36 115 187 Pol D Powell J E 2007 New information on Lessemsaurus sauropoides Dinosauria Sauropodomorpha from the Upper Triassic of Argentina Special Papers in Palaeontology 77 223 243 Diego Pol Alberto Garrido Ignacio A Cerda 2011 A New Sauropodomorph Dinosaur from the Early Jurassic of Patagonia and the Origin and Evolution of the Sauropod type Sacrum PLOS ONE 6 1 e14572 Bibcode 2011PLoSO 614572P doi 10 1371 journal pone 0014572 PMC 3027623 PMID 21298087 a href Template Cite journal html title Template Cite journal cite journal a CS1 maint uses authors parameter link Foelix Rainer Pabst Ben Kindlimann Rene 2011 Die Saurier in Frick PDF Mitteilungen der aargauischen Naturforschenden Gesellschaft 37 doi 10 5169 seals 283430 Apaldetti C Martinez R N Cerda I A Pol D Alcober O 2018 An early trend towards gigantism in Triassic sauropodomorph dinosaurs Nature Ecology amp Evolution 2 8 1227 1232 doi 10 1038 s41559 018 0599 y McPhee Blair W Benson Roger B J Botha Brink Jennifer Bordy Emese M amp Choiniere Jonah N 2018 A giant dinosaur from the earliest Jurassic of South Africa and the transition to quadrupedality in early sauropodomorphs Current Biology 28 19 3143 3151 e7 doi 10 1016 j cub 2018 07 063 PMID 30270189 Diego Pol Alberto Garrido Ignacio A Cerda 2011 A New Sauropodomorph Dinosaur from the Early Jurassic of Patagonia and the Origin and Evolution of the Sauropod type Sacrum PLOS ONE 6 1 e14572 Bibcode 2011PLoSO 614572P doi 10 1371 journal pone 0014572 PMC 3027623 PMID 21298087 a href Template Cite journal html title Template Cite journal cite journal a CS1 maint uses authors parameter link Apaldetti Martinez Ricardo N Cerda Ignatio A Pol Diego Alcober Oscar 2018 An early trend towards gigantism in Triassic sauropodomorph dinosaurs Nature Ecology amp Evolution 2 8 1227 1232 doi 10 1038 s41559 018 0599 y hdl 11336 89332 PMID 29988169 S2CID 49669597 Rauhut O W M Holwerda F M Furrer H 2020 A derived sauropodiform dinosaur and other sauropodomorph material from the Late Triassic of Canton Schaffhausen Switzerland Swiss Journal of Geosciences 113 1 8 doi 10 1186 s00015 020 00360 8 S2CID 220294939 External links Edit Media related to Lessemsaurus at Wikimedia Commons Portals Dinosaurs Argentina This Sauropodomorph related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Lessemsaurus amp oldid 1133566926, wikipedia, wiki, book, books, library,
