Reptiles arose about 320 million years ago during the Carboniferous period. Reptiles, in the traditional sense of the term, are defined as animals that...

Reptiles, as commonly defined, are a group of tetrapods with an ectothermic ('cold-blooded') metabolism and amniotic development. Living reptiles comprise...

List of reptiles List of largest reptiles List of largest extant lizards Lists of reptiles by region List of U.S. state reptiles Marine reptile List of marine...

relatives are squamates (lizards and snakes). Tuatara are of interest for studying the evolution of reptiles. Tuatara are greenish brown and grey, and measure...

the early evolution of reptiles classified the Ichthyosauromorpha as basal archosauromorphs, forming a clade with the other marine reptile groups Thalattosauria...

study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology. The following list of reptiles lists...

between the base of the clavicles, although this is not found in living amphibians. The cleithrum disappeared early in the evolution of reptiles, and is not...

Marine reptiles are reptiles which have become secondarily adapted for an aquatic or semiaquatic life in a marine environment. Only about 100 of the 12...

male reptiles. In all reptiles and mammals the sperm storage region of the epididymis can objectively be identified as that distal extremity of the epididymis...

Snakes are elongated, limbless, carnivorous reptiles of the suborder Serpentes (/sɜːrˈpɛntiːz/). Like all other squamates, snakes are ectothermic, amniote...

examining the evolution of reproductive mode in squamate reptiles". Journal of Experimental Zoology Part B: Molecular and Developmental Evolution. 324 (6):...

problems in the ecology, evolution, physiology, behavior, taxonomy, or molecular biology of amphibians and reptiles. Amphibians or reptiles can be used as model...

vertebrates Sauropsids (reptiles and birds, as well as the extinct parareptiles, dinosaurs, pterosaurs and Mesozoic marine reptiles) Synapsids (mammals as...

been found. It is an example of a nearly perfect evolutionary intermediate between the mammal-like reptiles and extant reptiles. The earliest mammals were...

Lizard is the common name used for all squamate reptiles other than snakes (and to a lesser extent amphisbaenians), encompassing over 7,000 species, ranging...

is the largest order of reptiles, comprising lizards and snakes. With over 11,500 species, it is also the second-largest order of extant (living) vertebrates...

ancestor and radiation of species Evolution of reptiles – Origin and diversification of reptiles through geologic time Evolution of brachiopods – The origin...

mammals are known to prey on reptiles, the major predator is other reptiles. Some reptiles eat reptile eggs, for example the diet of the Nile monitor includes...

Evolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes...

timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life...

shows the progression of evolution in fossil fish, and amphibians and reptiles through comparative anatomy, including a list of all the (then) known fossil...

mammal-like reptiles or pelycosaurs, but both are now seen as outdated and disfavored paraphyletic terms, since they were not reptiles, nor part of reptile lineage...

The reptiles of Great Britain include three native snakes and three native lizards. A number of sea turtles visit Great Britain's shores. There are also...

extinct stem-group relatives of modern reptiles, as well as birds (which, as theropod dinosaurs, are nested within reptiles as more closely related to crocodilians...

bacterial pathogens. Some reptile venom is also composed of different types of β-defensins, another trait shared with reptiles. It is thought to be an ancient...

The evolution of cetaceans is thought to have begun in the Indian subcontinent from even-toed ungulates (Artiodactyla) 50 million years ago (mya) and to...

contribution to the jaw joint. Early in their evolution, diapsid reptiles evolved a lower temporal bar which was composed of the quadratojugal and jugal. The lower...

This list of fossil reptiles described in 2024 is a list of new taxa of fossil reptiles that were described during the year 2024, as well as other significant...

The positions of such groups are described by terms including "theistic evolution", "theistic evolutionism" or "evolutionary creation". Of all the religious...

Turtles, or testudines, are reptiles of the order Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided...