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Acanthochelys macrocephala (RHODIN, MITTERMEIER & MCMORRIS, 1984)

IUCN Red List - Acanthochelys macrocephala - Least Concern, LR
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Higher TaxaChelidae, Chelinae, Pleurodira, Testudines (turtles)
Subspecies 
Common NamesE: Big-headed Pantanal Swamp Turtle
G: Pantanal-Plattschildkröte
Portuguese: Cágado, Tartaruga-do-Pantanal. 
SynonymPlatemys macrocephala RHODIN, MITTERMEIER & MCMORRIS 1984
Phrynops chacoensis FRITZ & PAULER 1992
Peltocephalus dumeriliana ?
Platemys macrocephala — ALDERTON 1988
Acanthochelys macrocephala — ERNST & BARBOUR 1989: 61
Acanthochelys macrocephala — RHODIN, MITTERMEIER & ERNST 1990
Acanthochelys macrocephala — VINKE & VINKE 2001
Acanthochelys chacoensis ?
Acanthochelys macrocephala — TTWG 2014
Acanthochelys macrocephala — TTWG 2021 
DistributionC Bolivia (upper Rio Mamore drainage),
Brazil (upper Rio Paraguay drainage in SW Mato Grosso),
N Paraguay, Argentina

Type locality: Caiçara (16°03'S 57°43'W), Rio Paraguay, Mato Grosso, Brazil  
Reproductionoviparous. 
TypesHolotype: NMW 1293 
DiagnosisAdditional details, e.g. a detailed description or comparisons (2100 characters), are available for collaborators and contributors. Please contact us for details. 
CommentHabitat: freshwater (rivers, swamps) 
EtymologyNamed after Greek makros (μακρός), long in extent + Greek kephale (κεφαλή), head. (Esteban Lavilla, pers. comm., April 2024) 
References
  • Alderton, D. 1988. Turtles and tortoises of the world. Facts on File, New York.
  • Artner, H. 2007. Observations in the natural habitat in Paraguay and their implications for the first successful breeding of the Pantanal Swamp turtle Acanthochelys macrocephala (Rhodin, Mittermeier & McMorris, 1984). Emys 14 (3): 4-25
  • Ávila, R.W.; Souza, F.L.; Landgref-Filho, P. & Campos, A.L.C. 2006. Reptilia, Chelidae, Acanthochelys macrocephala: distribution, habitat, and geographical distribution map. Check List 2 (2): 35-37 [retraction in Check List 2 (2)] - get paper here
  • Böhm, Stephan 2015. Eindrücke der Herpetofauna im Chaco Paraguays. Terraria-Elaphe 2015 (1): 40-46 [2014] - 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.
  • Bour, R. 2008. Global diversity of turtles (Chelonii; Reptilia) in freshwater. Hydrobiologia 595:593–598 - get paper here
  • Cacciali, Pier; Norman J. Scott, Aida Luz Aquino Ortíz, Lee A. Fitzgerald, and Paul Smith 2016. The Reptiles of Paraguay: Literature, Distribution, and an Annotated Taxonomic Checklist. SPECIAL PUBLICATION OF THE MUSEUM OF SOUTHWESTERN BIOLOGY, NUMBER 11: 1–373 - get paper here
  • Ernst, C H 1987. Platemys Wagler. Twistnecked turtles. Catalogue of American Amphibians and Reptiles ( 405: 1-4 - get paper here
  • Ernst,C.H. and Barbour,R.W. 1989. Turtles of the World. Smithsonian Institution Press, Washington D.C. - London
  • Fritz, Uwe and Ingo Pauler 1999. Phrynops chacoensis Fritz & Pauler, 1992, ein Juniorsynonym von Platemys macrocephala Rhodin, Mittermeier & McMorris, 1984. Salamandra 35 (1): 53-56 - get paper here
  • Fritz,U. & Pauler,I. 1992. Phrynops chacoensis spec. nov. (Reptilia, Chelidae), eine neue Krötenkopfschildkröte. Mitt. Zool. Mus. Berlin 68 (2): 299-307 - get paper here
  • Gemel, R.; G. Gassner & S. Schweiger 2019. Katalog der Typen der Herpetologischen Sammlung des Naturhistorischen Museums Wien – 2018. Ann. Naturhist. Mus. Wien, B 121: 33–248
  • Gonzalez R. C. et al. 2020. Lista dos Nomes Populares dos Répteis no Brasil – Primeira Versão. Herpetologia Brasileira 9 (2): 121 – 214 - get paper here
  • Gustafson, A. Weiler. 2006. Acanthochelys macrocephala (Rhodin, Mittermeier & McMorris, 1984) au Paraguay. Manouria 33:24-25
  • Huebinger, Ryan M.; John W. Bickham, Anders G. J. Rhodin, and Russell A. Mittermeier 2013. Mitochondrial DNA Corroborates Taxonomy of the South American Chelid Turtles of the Genera Platemys and Acanthochelys. Chelonian Conservation and Biology Jul 2013, Vol. 12, No. 1: 168-171. - get paper here
  • Rhodin A G J; Mittermeier R A; Ernst C H 1990. Acanthochelys macrocephala (Rhodin, Mittermeier, and McMorris) big-headed Pantanal swamp turtle. Catalogue of American Amphibians and Reptiles 481: 1-2 - get paper here
  • Rhodin, A. G. J.;Mittermeier, R. A.;McMorris, J. R. 1984. Platemys macrocephala, a new species of chelid turtle from central Bolivia and the pantanal region of Brazil. Herpetologica 40 (1): 38-46 - get paper here
  • SILVA BRITO, E., E. A. SANTOS RODRIGUES, M. FERRAO, V. L. FERREIRA, W. MORAES TOMAS, AND C. STROSMANN 2020. Acanthochelys macrocephala (Big-Headed Pantanal Swamp Turtle). Population And Movement. Herpetological Review 51: 104-105.
  • Souza, Franco L. 2004. Uma revisão sobre padrões de atividade, reprodução e alimentação de cágados brasileiros (Testudines, Chelidae) [A review on activity patterns, reproduction, and feeding habits in Brazilian chelid turtles (Testudines, Chelidae)]. Phyllomedusa 3 (1): 15-28 - get paper here
  • Souza, Franco; João Rodrigues, Miguel Olalla-Tárraga, José Diniz-Filho, Pablo Martinez and Ricardo J. Sawaya 2019. Niche divergence and diversification in South American freshwater turtles of the genus Acanthochelys (Chelidae). Amphibia-Reptilia 40 (4): 475–485 - get paper here
  • 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
  • Vinke, T. & Vinke, S. 2001. The turtle and tortoise fauna of the central Chaco of Paraguay. Radiata 10 (3): 3-19
  • Vinke, T. & Vinke, S. 2006. Acanthochelys macrocephala (RHODIN, MITTERMEIER & MCMORRIS). Sauria 28 (1): 1-2 - get paper here
  • Vinke, T. & Vinke, S. 2010. Die Pantanal-Plattschildkröte, Acanthochelys macrocephala - eine Schildkröte, die noch immer viele Fragen aufwirft. Reptilia (Münster) 15 (81): 42-45 - get paper here
  • ZIEGLER, T., UNGER, J., FEILER, A. & E. LEHR 2002. The first Gran Chaco expedition of the Museum für Tierkunde Dresden: Records of amphibians, reptiles and mammals from the Dry Chaco of Paraguay (Amphibia, Reptilia, Mammalia). Faunistische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 23: 219-238
 
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