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 PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Superorder:	Dinosauria
Order:	Saurischia
Suborder:	†Sauropodomorpha
Infraorder:	†Sauropoda
(unranked):	†Titanosauria
Family:	†Rinconsauria
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

External links

• South American sauropods