Muyelensaurus

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. Fossils have been recovered from the Plottier Formation in the Neuquén province of Patagonia. The type species is M. pecheni.[1] 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.

Muyelensaurus
Temporal range: late Coniacian-early Santonian
~88–86 Ma
↓
Scientific classification
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Genus:
†Muyelensaurus

Calvo et al. 2007
Species
  • †M. pecheni Calvo et al. 2007 (type)

Classification

The cladogram below follows Franca et al. (2016), placing Muyelensaurus as a basal lithostrotian.[2]

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.[3]

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. Muyelensaurus at Fossilworks.org
  2. 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.
  3. 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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