The list of species follows a 2017 review of the Trionychidae by Georgios L. Georgalis and Walter G. Joyce. •
Trionyx triunguis (
Forsskål, 1775) –
African or Nile softshell turtle • †
Trionyx pliocenicus Fucini, 1912 – Pliocene of Tuscany (Italy) and the species from Europe and Asia follow the 2017 review by Georgalis and Joyce. • † "
Trionyx"
admirabilis (Hay, 1905) – Paleocene of New Mexico (United States) • † "
Trionyx"
aequa (Hay, 1908) – Eocene of Wyoming (United States) • † "
Trionyx"
allani (Gilmore, 1923) – Late Cretaceous of Alberta (Canada) • † "
Trionyx"
austerus (Hay, 1908) – Late Cretaceous of New Mexico (United States) • † "
Trionyx"
baynshirensis Danilov et al., 2014 – Middle Cretaceous of Dornogovi Aimag (Mongolia) • † "
Trionyx"
beecheri (Hay, 1904) – Late Cretaceous of Wyoming (United States) • † "
Trionyx"
boulengeri Reinach, 1900 – Oligocene of Rhineland-Palatinate (Germany) • † "
Trionyx"
capellinii Negri, 1892 – Eocene of Veneto (Italy) • † "
Trionyx"
dissolutus Vitek & Danilov, 2014 – Late Cretaceous of Navoiy Region (Uzbekistan) • † "
Trionyx"
ellipticus (Hay, 1908) – Eocene of Utah (United States) • † "
Trionyx"
eloisae (Gilmore, 1919) – Paleocene of New Mexico (United States) • † "
Trionyx"
foveatus Leidy, 1857 – Late Cretaceous of Montana (United States) • † "
Trionyx"
gilbentuensis Danilov et al., 2014 – Late Cretaceous of Ömnögovi Aimag (Mongolia) • † "
Trionyx"
gobiensis Danilov et al., 2014 – Late Cretaceous of Ömnögovi Aimag (Mongolia) • † "
Trionyx"
gregarius (Gilmore, 1934) – Eocene of Inner Mongolia (China) • † "
Trionyx"
henrici Owen, 1849 – Eocene of Hampshire (United Kingdom) • †
"Trionyx" ikoviensis Danilov et al., 2011 – Eocene of Luhansk (Ukraine) • † "
Trionyx"
impressus (Yeh, 1963) – Eocene of Yuangdong Province (China) • † "
Trionyx"
latus (Gilmore, 1919) – Late Cretaceous of Alberta (Canada) • † "
Trionyx"
leucopotamicus Cope, 1891 – Eocene of Saskatchewan (Canada) • † "
Trionyx"
johnsoni Gilmore, 1931 – Eocene of Inner Mongolia (China) • †
"Trionyx" kansaiensis Vitek & Danilov, 2010 – Late Cretaceous of Khodzhent Province (Tajikistan) • † "
Trionyx"
linchuensis (Yeh, 1962) – Eocene of Shandong Province (China) • † "
Trionyx"
messelianus Reinach, 1900 – Eocene of Hesse (Germany) • † "
Trionyx"
miensis Okazaki and Yoshida, 1977 – Pliocene of Mie Prefecture (Japan) • † "
Trionyx"
miocaenus (Matthew, 1924) – Eocene of Wyoming (United States) • † "
Trionyx"
minusculus (Chkhikvadze, 1973) – Eocene of East Kazakhstan Region (Kazakhstan) • † "
Trionyx"
mira (Hay, 1908) – Eocene of Wyoming (United States) • † "
Trionyx"
ninae Chkhikvadze, 1971 – Oligocene of Karagandy Region (Kazakhstan) • † "
Trionyx"
onomatoplokos Georgalis & Joyce, 2017 – Late Cretaceous of Kyzylorda Region (Kazakhstan) • † "
Trionyx"
reesidei (Gilmore, 1919) – Paleocene of New Mexico (United States) • † "
Trionyx"
riabinini Kuznetsov & Chkhikvadze, 1987 – Late Cretaceous of Kyzylorda Region (Kazakhstan) • † "
Trionyx"
robustus (Gilmore, 1919) – Late Cretaceous of New Mexico (United States) • † "
Trionyx"
shiluutulensis Danilov et al., 2014 – Late Cretaceous of Ömnögovi Aimag (Mongolia) • † "
Trionyx"
silvestris Walker & Moody, 1974 – Eocene of Kent (United Kingdom) • †
"Trionyx" singularis (Hay, 1907) – Paleocene of New Mexico (United States) • † "
Trionyx"
uintaensis Leidy, 1873 – Eocene of Wyoming (United States) • † "
Trionyx"
vegetus (Gilmore, 1919) – Paleocene of New Mexico (United States) • † "
Trionyx"
yixiensis Li, Tong et al., 2015 – Early Cretaceous of Heilongjiang Province (China) † = extinct ==References==