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Hydromedusa tectifera COPE, 1870

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Higher TaxaChelidae, Hydromedusinae, Pleurodira, Testudines (turtles)
Subspecies 
Common NamesE: South-American Snake-headed Turtle
Portuguese: Cágado, Cágado-Cabeça-de-Cobra, Cágado-de-Pescoço-Comprido 
SynonymHydromedusa tectifera COPE 1870: 147
Hydromedusa platanensis GRAY 1873: 302
Hydromedusa wagleri GÜNTHER 1884: 423
Hydromedusa tectifera — BOULENGER 1885: 85
Hydromedusa tectifera — BOULENGER 1886: 425
Hydromedusa platanensis — GÜNTHER 1884: 423
Hydromedusa tectifera — ALDERTON 1988
Hydromedusa tectifera — ERNST & BARBOUR 1989: 51
Hydromedusa tectifera — TTWG 2014
Hydromedusa tectifera — TTWG 2021 
DistributionSE Brazil (Sao Paulo, Rio Grande do Sul, Rio de Janeiro [HR 32: 274], Parana, Minas Gerais, Santa Catarina ?), E Paraguay, NE Argentina, Uruguay

Type locality: Uruguay (“Monte Video”)  
Reproductionoviparous. 
TypesType: USNM or ANSP, but apprently lost fide TTWG 2021: 43.
Holotype: NHMUK 1947.3.5.85 [platanensis] 
DiagnosisAdditional details, e.g. a detailed description or comparisons (2806 characters), are available for collaborators and contributors. Please contact us for details. 
CommentHabitat: freshwater (Small rivers) 
EtymologyNamed after Latin tectum = roof, a covering and fero = I bear, carry; a reference to the carapace.

The genus was named after Greek hydor = water (when used as a prefix, hydro-); Medusa was one of the three Gorgons in Greek mythology. 
References
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  • Bager, Alex and João L. O. Rosado 2010. Estimation of Core Terrestrial Habitats for Freshwater Turtles in Southern Brazil Based on Nesting Areas. Journal of Herpetology 44 (4): 658–662 - get paper here
  • Baur, G. 1893. Notes on the classification and taxonomy of the Testudinata. Proc. Amer. Philos. Soc. 31: 210-225 - get paper here
  • Bonin, F., Devaux, B. & Dupré, A. 2006. Turtles of the World. English translation by P.C.H. Pritchard. Johns Hopkins University Press, 416 pp.
  • Bonino, M.F., J.N. Lescano, J.G. Haro & G.C. Leynaud 2009. Diet of Hydromedusa tectifera (Testudines-Chelidae) in a mountain stream of Córdoba province, Argentina Amphibia-Reptilia, 30(4): 545-554. - get paper here
  • Boulenger, G. A. 1885. Second list of reptiles and batrachians from the province Rio Grande do Sul, sent to the Natural History Museum by Dr. H. van Ihering. Ann. Mag. nat. Hist. (5) 16: 85-88 - get paper here
  • Boulenger, G.A. 1886. A synopsis of the reptiles and batrachians of the province Rio Grande do Sul, Brazil. Ann. Mag. nat. Hist. (5) 18: 423-445 - get paper here
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  • Lüling, K.-H. 1984. Die Schlangenhalsschildkröte Hydromedusa tectifera in ihrer Heimat. Herpetofauna 6 (33): 28-31 - get paper here
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  • Noleto, R.B. et al. 2006. Karyotypic characterization of Hydromedusa tectifera(Testudines, Pleurodira) from the upper Iguaçu River in the Brazilian state of Paraná. Genetics and Molecular Biology 29 (2): 263-266 - get paper here
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  • TTWG [Peter Paul van Dijk, John B. Iverson, Anders G.J. Rhodin, H. Bradley Shaffer, and Roger Bour] 2014. Turtles of the World, 7th Edition: Annotated Checklist of Taxonomy, Synonymy, Distribution with Maps, and Conservation Status. 000.v7. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v7.2014 - get paper here
  • TTWG; Rhodin, A.G.J., Iverson, J.B., Bour, R., Fritz, U., Georges, A., Shaffer, H.B., and van Dijk, P.P. 2021. Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status (9th Ed.). In: Rhodin, A.G.J., Iverson, J.B., van Dijk, P.P., Stanford, C.B., Goode, E.V., Buhlmann, K.A., and Mittermeier, R.A. (Eds.). Chelonian Research Monographs 8:1–472. doi:10.3854/crm.8.checklist.atlas.v9.2021. - get paper here
  • Valverde, J. 2009. Südamerikanische Schildkröten. Reptilia (Münster) 14 (80): 16-27 - get paper here
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