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Meridiosaurus is an extinct genus of mesoeucrocodylian that is a possible member of the family Pholidosauridae. Remains have been found in the Late Jurassic Tacuarembó Formation in Tacuarembó, Uruguay. The genus was described in 1980 on the basis of a partial rostrum that included the premaxillae and most of the maxillae. The assignment to Pholidosauridae is considered doubtful by some authors, but a 2011 redescription and phylogenetic analysis confirmed the pholidosaurid classification of Meridiosaurus.

References

1. Page 135; Origins and evolution of the Antarctic biota By J. Alistair Crame, Geological Society of London, 1989. ISBN 0903317443/ISBN 9780903317443
2. Sprechmann, P.; Bossi, J.; Da Silva, J. (1981). "Cuenca del Jurásico y Cretácico del Uruguay". Comité Sudamericano del Jurásico y Cretácico. Cuencas sedimentarias del Jurásico y Cretácico de América de Sur, Buenos Aires. 1: 239–270.
3. Mones, A. (1980). "Nuevos elementos de la paleoherpetofauna del Uruguay (Crocodilia y Dinosauria)". Actas II Congreso Argentino de Paleontologia y Bioestratigrafia y I Congreso Latinoamericano, Buenos Aires. 1: 265–277.
4. Gasparini, Z.; Chiappe, L. M.; Fernandez, M. (1991). "A new Senonian peirosaurid (Crocodylomorpha) from Argentina and a synopsis of the South American Cretaceous crocodilians". Journal of Vertebrate Paleontology. 11 (3): 316–333. doi:10.1080/02724634.1991.10011401.
5. Estes, R.; Báez, A. (1985). "Herpetofaunas of North and South America during the Late Cretaceous and Cenozoic: evidence for interchange?". In Stehli, F. G.; Webb, S. D. (eds.). The Great American Biotic Interchange. London and New York: Plenum Press. pp. 139–195.
6. Fortier, D., Perea, D. and Schultz, C. (2011), Redescription and phylogenetic relationships of Meridiosaurus vallisparadisi, a pholidosaurid from the Late Jurassic of Uruguay. Zoological Journal of the Linnean Society, 163: S257–S272. doi:10.1111/j.1096-3642.2011.00722.x

Further reading

• A. Mones. 1980. Nuevos elementos de la paleoherpetofauna del Uruguay (Crocodilia y Dinosauria) . Actas II Congreso Argentino de Paleontologia y Bioestratigrafia y I Congreso Latinoamericano, Buenos Aires 1:265-277

External links

• Meridiosaurus in the Paleobiology Database

v t e Neosuchia
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Clade: Pseudosuchia Clade: Metasuchia Pseudosuchia see Pseudosuchia Neosuchia see below↓
Neosuchia Neosuchia †Burkesuchus †Isisfordia †Karatausuchus †Khoratosuchus †Montsecosuchus †Stolokrosuchus? †Susisuchus †Tadzhikosuchus? †Wahasuchus? †Zhyrasuchus? †Thalattosuchia? †Tethysuchia Pholidosauridae Anglosuchus Chalawan Crocodilaemus Dakotasuchus Elosuchus Meridiosaurus Oceanosuchus Pholidosaurus Sarcosuchus Terminonaris Vectisuchus Woodbinesuchus Dyrosauridae Acherontisuchus Anthracosuchus Arambourgisuchus Atlantosuchus Brachiosuchus Cerrejonisuchus Chenanisuchus Congosaurus Dorbignysuchus Dyrosaurus Fortignathus Guarinisuchus Hyposaurus Luciasuchus Phosphatosaurus Rhabdognathus Rodeosuchus Sabinosuchus? Sokotosuchus Tilemsisuchus †Atoposauridae Alligatorellus Alligatorium Aprosuchus Atoposaurus Knoetschkesuchus Sabresuchus Theriosuchus Varanosuchus †Stomatosuchidae Laganosuchus Stomatosuchus †Paluxysuchidae Deltasuchus Paluxysuchus †Goniopholididae Amphicotylus Anteophthalmosuchus Calsoyasuchus Coelosuchus Denazinosuchus Diplosaurus Eutretauranosuchus Goniopholis Hulkepholis Nannosuchus Ophiussasuchus Oweniasuchus Pinacosuchus? Siamosuchus Sunosuchus Symptosuchus? †Bernissartiidae Bernissartia Koumpiodontosuchus †Paralligatoridae Batrachomimus Brillanceausuchus Kansajsuchus Paralligator Rugosuchus Scolomastax Shamosuchus Tarsomordeo Turanosuchus Wannchampsus Yanjisuchus Eusuchia see below↓
Eusuchia Eusuchia †Borealosuchus †Confractosuchus †Dolichochampsa †Gilchristosuchus †Heterosuchus †Isisfordia? †Portugalosuchus †Pristichampsus †Susisuchus? †Titanochampsa? †Atoposauridae? †Bernissartiidae? †Paralligatoridae? †Hylaeochampsidae Acynodon? Hylaeochampsa Iharkutosuchus Pachycheilosuchus? Pietraroiasuchus Turcosuchus Unasuchus †Allodaposuchidae Agaresuchus Allodaposuchus Arenysuchus? Ischyrochampsa Lohuecosuchus Massaliasuchus Musturzabalsuchus? †Aegyptosuchidae Aegyptosuchus Aegisuchus †"Thoracosaurs" Argochampsa Eogavialis Eosuchus Eothoracosaurus Thoracosaurus †Planocraniidae Boverisuchus Duerosuchus Planocrania Crocodilia see Crocodilia for extant taxa, and Extinct Crocodilia for extinct ones
See also: Coelognathosuchia Category

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• Tethysuchians
• Late Jurassic crocodylomorphs of South America
• Kimmeridgian life
• Tacuarembó Formation
• Fossils of Uruguay
• Fossil taxa described in 1980
• Prehistoric pseudosuchian genera
• Prehistoric archosaur stubs
• Uruguayan history stubs