Holotype: MACN 1731 (Museo Argentino de Ciencias Naturales Capital Federal BA, Argentine) Nom d'origine: Platemys pallidipectoris Collected: “col. Augusto V. Aula, julio de 1944” Type Locality: "Pcia. Roque Sáenz Peña, Chaco" (Argentine) Etymology: ? Publication: Freiberg M. A. 1945. Una nueva especie de Tortuga del género Platemys Wagler, Physis 20: 19-23. Common Name english: Chaco Side-necked Turtle Nom commun français: Platémyde à éperons
Holotype: NMW 23391 (Naturhistorisches Museum Wien, Autriche) Nom d'origine: Emys maximiliani Collected: Don Joan Natterer Type Locality: "Capitania St. Paulo" Etymology: ? Publication: Mikan, J.C. 1820. Delectus Florae et Faunae Brasiliensis. Antoinii Strauss, Wien: 54p. Common Name english: Brazilian Snake-necked Turtle Nom commun français: Hydromeduse de Maximilien
Mesoclemmys heliostemma (McCord, J. Ouni & Lamar, 2001)
Holotype: USNM 541895 (Natinal Museum of Natural History, Smithsonian Institution, Washington, USA) Nom d'origine: Batrachemys heliostemma Collected: Roy W. McDiarmid on 17 March, 1984 Type Locality: “the base of Pico da Neblina (situated on the Venezuela/Brazil border) on the left bank of Río Baria (=Río Mawarinuma) [4° 95'N, 66° 10' W], a tributary of the Rio Negro, Amazonas, Venezuela” Etymology: The name is a coinbination of Greek helios, "sun," and Greek stemma (grammatical gender neutral), "wreath," in reference to the bright yellow-orange facial bands found in many juveniles that extend like a wreath from the supra-tympanum over and across the eyes, ending and joining at the tip of the nose. As the grammatical gender of Batrachemys is feminine, the binominal combination is Batrachemys heliostemma. Publication: McCord WP., J-O. Mehdi and WW. Lamar, 2001 - A Taxonomic Reevaluation of Phrynops (Testudines:Chelidae) with th description of two new species of Batrachemys., Rev. Biol. Trop., 49(2): 715-764 Common Name english: Amazon Toadhead Turtle Nom commun français: Platémyde à tête jaune de l'Amazone
Holotype: SMF 62530 (Natur-Museum und Forschung-Institut Senckenberg Frankfurt-am-Main, Allemagne) Nom d'origine: Phrynops hogei Collected: Instituto Butantan, 1.5.1966 Type Locality: "Rio Pequena, südwestlich von São Paulo, Brasilien" Etymology: en honeur du Dr. A.R. Hoge Publication: Mertens, R. 1967. Bemerkenswerte süsswasserschild-kröten aus Brasilien. Senck. Biol. 48: 71-82. Common Name english: Hoge's Side-necked Turtle Nom commun français: Platémyde de Hoge
Mesoclemmys nasuta (Schweigger, 1812)
Holotype: MNHN 4140 (Museum National d'Histoire Naturelle de Paris, France) Nom d'origine: Emys nasuta Collected: ? Type Locality: "Patria ignota" (localité inconnue) Etymology: The specific epithet nasutus (from nasus: nose) is a reference to the conspicuous snout, ‘tubo narium cylindrico’ (tube of the nares cylindrical) and ‘naso tuberculato, in cylindrum brevem protracto’ (nose making a tubercle, projecting as a short cylinder) according to SCHWEIGGER. (Bour, 2007) Publication: Schweigger, A.F. 1812. Prodromus monographiae Cheloniorum. Koenigsberg. Arch. Naturw. Math. 1:2 298. Common Name english: Common Toad-headed Turtle Nom commun français: Platémyde de Schweigger
Holotype: MZUSP 4111 (Museu de Zoologia da Universidade de São Paulo) Nom d'origine: Mesoclemmys perplexa Collected: in 08 October 2000 by H. Zaher and team Type Locality: "Forested and humid areas of the regions called “Olho d’Água da Santa”and “Baixão do Fausto”, southern part of the Parque Nacional da Serra das Confusões, State of Piauí, Brasil." Etymology: Perplexa (latin) means confused, intricate, obscure, or ambiguous, and refers to the place where the taxon was observed, Serra das Confusões; it also alludes to its ambiguous generic attribution, and that of its allies. Publication: Bour R. & Zaher H., 2005. A new species of Mesoclemmys from the open formations of northeastern Brazil (Chelonii, Chelidae), Papéis Avulsos de Zoologia, Mus. Zool. Uni. de Sao Paulo, Vol. 45(24):295-311. Common Name english: Brazilian Snake-necked Turtle Nom commun français: Platémyde des canyons