Turn-Neck Turtles
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| Turn-Neck Turtles | ||||||||||||
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Smooth-backed snake-necked turtle ( Chelodina longicollis ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Pleurodira | ||||||||||||
| Cope , 1864 |
The turn-neck turtles (Pleurodira) place their heads laterally under the shell when they retract in a horizontal S-shaped movement. They represent the subordination of the turtles , which is younger compared to the Halsberger turtles , because they only formed in the chalk .
With them, the cervical vertebrae have strong spinous and lateral processes for the attachment of the neck muscles. Your pelvis has grown together with the shell.
All turn-neck turtles live in inland waters in the southern hemisphere, in Africa , Madagascar , Australia , New Guinea and South America .
Including fossil core group representatives, the subordination is narrower or broader depending on the author, in the former case the pan group is called Pan-Pleurodira and the crown group is called Pleurodira and in the latter case the crown group, which contains the recent Pleurodira, is called Eupleurodira.
Familys
- Snake neck turtles (Chelidae)
- Pelomedus tortoises (Pelomedusidae)
- Podocnemididae
literature
- V. Storch, U. Welsch: Special Zoology. Part 2: vertebrates or skulls. 6th edition. Spectrum Akademischer Verlag Heidelberg / Berlin 2004, ISBN 3-8274-1112-2 .
See also: Systematics of the turtles
