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The tail is about 1.3-2.3 times as long as the head and body combined. The upper side is a rich, dark brown and painted with bright-yellowish to cream spots, which often enclose a few dark scales. Its tail is round in section and features very spinose scales. There are 70-115 scales around the middle of the body. [3]
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 January 2025. 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 ...
Dwarf yellow-headed gecko with regenerating tail. Regeneration in biology is the process of renewal, restoration, and tissue growth that makes genomes, cells, organisms, and ecosystems resilient to natural fluctuations or events that cause disturbance or damage. [1] Every species is capable of regeneration, from bacteria to humans.
Tuatara probably have the slowest growth rates of any reptile, [24] continuing to grow larger for the first 35 years of their lives. [9] The average lifespan is about 60 years, but they can live to be well over 100 years old; [9] tuatara could be the reptile with the second longest lifespan after tortoises.
The New Mexico whiptail grows from 6.5 to 9.1 in (16.5 to 23 cm) in length, and is typically overall brown or black in color with seven pale yellow stripes from head to tail. Light colored spots often occur between the stripes. They have a white or pale blue underside, with a blue or blue-green colored throat.
The smallest phytosaur femora reported to date are described from the lower Chinle Formation at Petrified Forest National Park (Arizona, United States) by Goldsmith et al. (2024), who interpret one of the studied femora as belonging to a post-hatching individual that may have died within the first year of its life, with slower growth rate than ...
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.
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 ).