Black Marsh Turtle - Taxonomy and Nomenclature

Taxonomy and Nomenclature

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.

They are classified under the subfamily Geoemydinae under the family Geoemydidae. Black marsh turtles are cryptodires, having the ability to pull their heads straight back into the shells; instead of folding their necks sideways along the body like in pleurodiran turtles.

The specific epithet "crassicollis" comes from Latin crassus ("thick") and collum ("neck"). The generic name was coined in honor of the Austrian zoologist Friedrich Siebenrock.

Siebenrockiella crassicollis are known by a variety of vernacular names among hobbyists, such as black terrapin, black mud turtle, Malaysian black mud turtle, fat-headed turtle, thick-necked turtle, and Borneo black leaf turtle. They are also known as Dickhalsschildkröte in German, ホオジロクロガメ in Japanese, Kura-kura pipi-putih in Indonesian, and Черепаха черная болотная in Russian.