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A white-headed dwarf gecko with tail lost due to autotomy. Autotomy (from the Greek auto-, "self-" and tome, "severing", αὐτοτομία) or 'self-amputation', is the behaviour whereby an animal sheds or discards an appendage, [1] usually as a self-defense mechanism to elude a predator's grasp or to distract the predator and thereby allow escape.
The ability and degree of regeneration in reptiles differs among the various species (see [111]), but the most notable and well-studied occurrence is tail-regeneration in lizards. [112] [113] [114] In addition to lizards, regeneration has been observed in the tails and maxillary bone of crocodiles and adult neurogenesis has also been noted.
Hox genes play a massive role in some amphibians and reptiles in their ability to regenerate lost limbs, especially HoxA and HoxD genes. [1]If the processes involved in forming new tissue can be reverse-engineered into humans, it may be possible to heal injuries of the spinal cord or brain, repair damaged organs and reduce scarring and fibrosis after surgery.
Reptiles, as commonly defined, are a group of tetrapods with an ectothermic ('cold-blooded') metabolism and amniotic development. Living reptiles comprise four orders : Testudines ( turtles ), Crocodilia ( crocodilians ), Squamata ( lizards and snakes ), and Rhynchocephalia (the tuatara ).
Unlike Correlophus cilliatus, R. leachianus are capable of tail regeneration through a process known as epimorphosis. Males and females of R. leachianus display differentiating morphological characteristics known as sexual dimorphism. Male R. leachianus display a hemipenal bulge at the base of the tail, whereas females do not have this bulge.
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 December 2024. Group of animals including lepidosaurs, testudines, and archosaurs This article is about the animal class. For other uses, see Reptile (disambiguation). Reptiles Temporal range: Late Carboniferous–Present PreꞒ Ꞓ O S D C P T J K Pg N Tuatara Saltwater crocodile Common box turtle ...
A serpentine reptile with vestigial limbs. It shows evidence of different osteoderm morphology after tail regeneration. Placosauriops "Placosauriops abderhaldeni" [53] Kuhn, 1940 A type of melanosaurinin Glyptosaurine of dubious assignment, as the type material has not been adequately diagnosed. Boidae: Eoconstrictor: Eoconstrictor fischeri [54]
The generic name Elasmosaurus means "thin-plate reptile", in reference to the "plate" bones of the sternal and pelvic regions, and the specific name platyurus means "flat-tailed", in reference to the compressed "tail" (actually the neck) and laminae of the vertebrae there.