Northern river terrapin.
Date 1878
Source https://www.flickr.com/photos/biodivlibrary/6258165066/in/set-72157627799685671/
Author Philbert Charles Berjeau
Source Anatomical and zoological researches: comprising an account of the zoological results of the two expeditions to western Yunnan in 1868 and 1875; and a monograph of the two cetacean genera, Platanista and Orcella
Source: https://commons.wikimedia.org/wiki/File:Batagur_baska.jpg

The northern river terrapin (Batagur baska) is a species of riverine turtle native to Southeast Asia. It is classified Critically Endangered by the IUCN and considered extinct in much of its former range.

Order: Testudines
Suborder: Cryptodira
Superfamily: Testudinoidea
Family: Geoemydidae
Genus: Batagur
Species: Batagur baska (Gray, 1830)
Synonyms

Emys baska Gray, 1830
Emys batagur Gray, 1831
Testudo baska Gray, 1831
Trionyx (Tetraonyx) cuvieri Gray, 1831
Tetronyx longicollis Lesson, 1834
Tetronyx baska Duméril & Bibron, 1835
Tetraonyx lessonii Duméril & Bibron, 1835
Tetraonyx longicollis Duméril & Bibron, 1835
Clemmys (Clemmys) batagur Fitzinger, 1835
Hydraspis (Tetronyx) lessonii Fitzinger, 1835
Emys tetraonyx Temminck & Schlegel, 1835
Tetraonyx batagur Gray, 1844
Batagur (Batagur) baska Gray, 1856
Clemmys longicollis Strauch, 1862
Tetraonyx baska Gray, 1869
Batagur batagur Lindholm, 1929
Tetraonyx lessoni Bourret, 1941 (ex errore)
Batagur ranongensis Nutaphand, 1979
Batagur basca Anan'eva, 1988 (ex errore)
Batagur batagur batagur Joseph-Ouni, 2004
Batagur batagur ranongensis Joseph-Ouni, 2004