Siebenrockiella crassicollis

Black marsh turtle
The shape of the upper jaws of black marsh turtles is the reason for their common name 'smiling terrapin'.
Conservation status
Vulnerable (IUCN 2.3)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Family:	Emydidae
Subfamily:	Geoemydinae
Genus:	Siebenrockiella
Species:	S. crassicollis
Binomial name
Siebenrockiella crassicollis (Gray, 1831)
Distribution of Siebenrockiella crassicollis.
Synonyms
Genus synonymy Bellia Gray 1869 Species synonymy Emys crassicollis Gray, 1831 Emys crassicolis Duméril & Bibron, 1835 (ex errore) Clemmys (Clemmys) crassicollis Fitzinger, 1835 Bellia crassicollis Gray, 1869 Bellia crassilabris Theobald, 1876 (ex errore) Pangshura cochinchinensis Tirant, 1885 Kachuga cochinchinensis Mocquard, 1907 Orlitia crassicollis Barbour, 1912 Siebenrockiella crassicollis Lindholm, 1929

Siebenrockiella crassicollis (commonly known as black marsh turtle, smiling terrapin, and Siamese temple turtle, among others) is a freshwater turtle endemic to Southeast Asia. One of the two species classified under the genus Siebenrockiella in the Geoemydidae family.

Black marsh turtles are small to medium-sized turtles that are almost completely black except for white to yellow markings on the head. They are largely aquatic and prefer slow-moving or still bodies of water with heavy vegetation. Black marsh turtles are also commonly kept as pets and as sacred animals in Southeast Asian Buddhist temples.

They are classified as Vulnerable by the IUCN, being one of the several Southeast Asian turtle species heavily exploited for the international wildlife trade, particularly for food and traditional medicine in the Chinese markets.

Formerly under the genus Emys, black marsh turtles are now classified under Siebenrockiella. They were first described by the British zoologist John Edward Gray from three specimens from the collections of Thomas Bell. Black marsh turtles used to be monotypic within the genus Siebenrockiella until Diesmos et al. (2005) showed based on genetic studies and morphology, that the recently rediscovered and critically endangered Philippine forest turtles, until that time known as Heosemys leytensis, were actually very closely related. Philippine forest turtles were subsequently reassigned to Siebenrockiella under the subgenus Panyaenemys.

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Wikipedia