Chelydra serpentina (Linnaeus 1758:199)

Holotype: Originally in the NRM; lost according to Andersson (1900:4, 23; and others); however, UPSZTY 280 (formerly NRM 49 = UUZM 280) is the holotype (Wallin 2001:127).

Chelydra lacertina Schweigger 1812:293

Holotype: MNHN 9580 (Gibbons et al. 1988:1); illustrated in Oppel (1811: Pl. 10–11), and reproduced in Bour & Schmidtler 2014:19), and in Wagler (1830b: Figs. 46–47; reproduced in Bour & Schmidtler 2014:19).

Chelydra emarginata Agassiz 1857:417

Syntypes (number uncertain); presumably all once in the MCZ according to Gibbons et al. (1988:1): at least MCZ 1472 still present.

Devisia mythodes Ogilby 1905:11

Holotype: QM J20207 (Covacevich 1971:54).

Chelydra laticarinatat Hay 1916:72

Holotype: USNM (formerly FGS 7094), fossil; illustrated in Hay (1916:Pl. 6, Fig. 6–7).

Chelydra sculpta t Hay 1916:73

Holotype: USNM (formerly FGS 5510), fossil; illustrated in Hay (1916:Pl. 4, Fig. 7 and Pl. 6, Fig. 8).

Chelydra osceola Stejneger 1918:89

Holotype: USNM 10369; paratypes (7), USNM 28761, 29208, 30013, 55317, 60545-46, and 60557 (Cochran 1961:228–29; Reynolds et al. 2007:10–11).

Macrochelys suwanniensis Thomas, Granatosky, Bourque, Krysko, Moler, Gamble, Suarez, Leone, Enge, & Roman 2014:150

Holotype: UF 166146 (photographed in the original description, pp. 154–156, Figs. 10–12); paratypes (2), UF 12694 (photographed in the original description, p. 148, Fig. 5) and 22267.