Trionychidae

African softshell turtle ( Trionyx triunguis )

The family of soft-shelled turtles ( Trionychidae ) is characterized by a soft, leather-like armor. The sides and the rear of the back shell are flexible. The neck is extremely long, the extended head runs into a trunk of. The toes of the oar -like flattened legs each have three claws free and are connected by webbing. They come in inland lakes of Africa, South and East Asia and North America before.

Soft-shelled turtles are very mobile and also quite snappy, as they also can reverse snap over their carapace because of their long neck. Their diet consists mainly of animal food, occasionally they also take herbal substances to himself. All species lay eggs round like a ball. They live in fresh water, sometimes in brackish water or even sea water. The Trionychidae appeared in the Upper Jurassic, together with the sea turtles. It was an early group of the Berger- neck turtles, whose success can be gauged by the fact that today, six (and / or seven) genera and 23 species in the inland waters of North America, Africa and Asia exist.

The absence of the keratin layer of the carapace (see turtles) may not lead to the assumption that we would have here to do with phylogenetically older turtles species but. During their development, these species have lost the keratin layer again.

Some soft-shelled turtles are extremely rare and are on the verge of extinction. From Cantor's giant soft-shelled turtle ( Pelochelys cantorii ) were recently on the Mekong in Cambodia found only three adult and twelve newly hatched juveniles. Also from the Yangtze giant soft-shell turtle existed until the discovery of a fourth animal in Vietnam only two known specimens in zoos in China and one in Hoan Kiem Lake in Hanoi.

System

  • Soft-shelled turtles ( Trionychidae ) Subfamily Cyclanorbinae genus Cyclanorbis Cyclanorbis elegans Gray 1869
  • Cyclanorbis senegalensis Dumeril & Bibron 1835
  • Cycloderma aubryi dumeril 1856
  • Cycloderma frenatum Peters 1854
  • Lissemys punctata Bonnaterre 1789
  • Lissemys scutata Peters 1868
  • Genus terrapins Amyda Cartilage soft-shelled turtle ( terrapins Amyda cartilaginea ) Boddaert 1770
  • Terrapins Amyda nakornsrithammarajensis Nutaphand 1979
  • Florida Softshell Turtle ( Apalone ferox ) Schneider 1783
  • Straight edge soft-shelled turtle ( Apalone mutica ) Le Sueur 1827
  • Spiny Softshell Turtle ( Apalone spinifera ) Le Sueur 1827
  • Chitra chitra Gray 1831
  • Chitra indica Gray 1831
  • Chitra vandijki Mccord & Pritchard 2003
  • Malays soft-shelled turtle ( Dogania subplana ) Geoffroy 1809
  • Burma soft-shelled turtle ( Nilssonia formosa ) Gray 1869
  • Ganges soft-shelled turtle ( Nilssonia gangeticus ) Cuvier 1825
  • Peacock soft-shell turtle ( Nilssonia hurum ) Gray 1831
  • Leith's softshell turtle ( Nilssonia leithii ) Gray 1872
  • Temple of soft-shelled turtle ( Nilssonia nigricans ) Anderson 1875
  • Wattle-necked softshell turtle ( Palea steindachneri ) SIEBENROCK 1906
  • Bibrons Giant softshell turtle ( Pelochelys bibroni ) Owen in 1853
  • Cantor's giant soft-shelled turtle ( Pelochelys cantorii ) Gray 1864
  • Pelochelys signifera Webb 2002
  • Pelodiscus parviformis Tang 1997
  • Chinese softshell turtle ( Pelodiscus sinensis) Wiegmann 1835
  • Euphrates soft-shelled turtle ( Rafetus euphraticus ) Daudin 1802
  • Yangtze giant soft-shell turtle ( Rafetus swinhoei ) Gray 1873
  • Trionyx axenaria Zhou, Zhang & Fang 1991
  • African softshell turtle ( Trionyx triunguis ) Forskål 1775
Leopold Fitzinger Phylogenetics Hoàn Kiếm Lake
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