Muyelensaurus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Sauropodomorpha
Clade: Sauropoda
Clade: Macronaria
Clade: Titanosauria
Clade: Rinconsauria
Genus: Muyelensaurus
Calvo et al. 2007
Species
  • M. pecheni Calvo et al. 2007 (type)

Muyelensaurus (meaning "Muyelen lizard", after an indigenous name for the Colorado River in Argentina) is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous of Argentina. It was more slender than other titanosaurs.[1] Fossils have been recovered in the Neuquén province of Patagonia and were originally assigned to the Portezuelo Formation but further research showed that these layers belong to the Plottier Formation.[2] The type species is M. pecheni.[3] The name Muyelensaurus first appeared in a 2007 paper by Argentine paleontologists Jorge Calvo of the Universidad Nacional del Comahue and Bernardo González Riga of the Laboratorio de Paleovertebrados, and Brazilian paleontologist Juan Porfiri of the Universidade Federal do Rio de Janeiro.[1]

Classification

The cladogram below follows Franca et al. (2016), placing Muyelensaurus as a basal lithostrotian.[4]

Lithostrotia

Malawisaurus

Muyelensaurus

Nemegtosauridae

Nemegtosaurus

Tapuiasaurus

Rapetosaurus

Saltasauroidea

Diamantinasaurus

Baurutitan

Isisaurus

Saltasauridae

Alamosaurus

Opisthocoelicaudia

Neuquensaurus

Saltasaurus

Aeolosaurini

Maxakalisaurus

Panamericansaurus

Rinconsaurus

Gondwanatitan

Aeolosaurus maximus

Aeolosaurus colhuehuapensis

Aeolosaurus rionegrinus

The cladogram below follows Mocho et al. (2019), this time placing Muyelensaurus within Rinconsauria.[5]

Lithostrotia

Malawisaurus

Paludititan

Lohuecotitan

Epachthosaurus

Opisthocoelicaudiinae

Alamosaurus

Opisthocoelicaudia

Saltasaurinae

Neuquensaurus

Rocasaurus

Saltasaurus

Lirainosaurinae

Lirainosaurus

Atsinganosaurus

Ampelosaurus

Bonatitan

Rapetosaurus

Nemegtosaurus

Aeolosaurinae

Gondwanatitan

Aeolosaurus

Rinconsauria

Rinconsaurus

Muyelensaurus

Bonitasaura

Lognkosauria

Mendozasaurus

Futalognkosaurus

References

  1. 1 2 J. O. Calvo, B. J. González Riga, J. D. Porfiri (2007). "A new titanosaur sauropod from the Late Cretaceous of Neuquén, Patagonia, Argentina". Arquivos do Museu Nacional, Rio de Janeiro. 65 (4): 485-504.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. Flavio Bellardini, Mattia Antonio Baiano, Francisco Barrios, Borja Holgado (2018). "New Titanosauria (Dinosauria, Sauropoda) remains from the Upper Cretaceous (Plottier Fm) of the southern Neuquén Basin (Patagonia, Argentina)". Journal of Iberian Geology. 44 (1): 75–84. doi:10.1007/s41513-018-0047-5.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. Muyelensaurus at Fossilworks.org
  4. França, M.A.G.; Marsola, J.C.d A.; Riff, D.; Hsiou, A.S.; Langer, M.C. (2016). "New lower jaw and teeth referred to Maxakalisaurus topai (Titanosauria: Aeolosaurini) and their implications for the phylogeny of titanosaurid sauropods". PeerJ. 4: e2054. doi:10.7717/peerj.2054. PMC 4906671. PMID 27330853.
  5. Mocho P, Páramo A, Escaso F, Marcos-Fernández F, Vidal D, Ortega F. 2019. Titanosaurs from Lo Hueco (Campanian-Maastrichtian) reveal new information about the evolutionary history of European titanosaurs, pp. 111. In: The Palaeontological Association (ed.), 63rd Annual Meeting, 15th–21st December 2019, University of Valencia, Spain, Programme Abstracts, AGM papers

Bibliography

  • Calvo, J.O.; González-Riga, B.J.; and Porfiri, J.D. (2007) "A new titanosaur sauropod from the Late Cretaceous of Neuquén, Patagonia, Argentina." Arquivos do Museu Nacional, Rio de Janeiro 65(4):485-504 PDF
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