Apalone spinifera (LeSueur 1827:258)

Syntypes (8): MNHN 1949, 6957, 8807-12; MNHN 8808 designated lectotype by Webb (1962:489 and photographed therein, Pl. 52); see also Bour et al. (1995) and Bour (2010:34).

Trionyx ocellatus LeSueur 1827:261

Syntypes (3, according to Webb 2004:120): BMNH 1859.9.20.26 (Webb 2004:120); and MNHN 1949 and 6957 (Bour et al. 1995:81); MNHN 6957 designated lectotype by Webb (1962:491); illustrated in Bour (2010:34).

Apalone hudsonica Rafinesque 1832:64

Holotype: Not known.

Tyrse argus Gray 1844:48

Holotype: BMNH 1947.3.6.18 (formerly 1843.9.6.12).

Aspidonectes nuchalis Agassiz 1857:402, 406

Syntypes (4): MCZ 1623–1625 and 1908 (Barbour & Loveridge 1929:226). MCZ 1623 designated lectotype by Webb (1962:492), photographed in Stejneger (1944:Pls. 14 and 15).

Amyda spinifera hartwegi Conant & Goin 1948:1

Holotype: UMMZ 95365; paratypes (19): KU 2990, 3289, 3758, 3769, 15934; MCZ 5758; UMMZ 66939-41, 69294, 75963, and 95363-64 (Peters 1952:54; Kluge 1984:79); USNM 55683, 91022, 95301, 100529-30 and 123446 (Cochran 1961:227; Reynolds et al. 2007:33).