Anolis is a genus of anoles (), iguanian lizards in the family Dactyloidae, native to the Americas. With more than 425 species, it represents the world's most species-rich amniote tetrapod genus, although many of these have been proposed to be moved to other genera, in which case only about 45 Anolis species remain. Previously, it was classified under the family Polychrotidae that contained all the anoles, as well as Polychrus, but recent studies place it in the Dactyloidae. Taxonomy This very large genus displays considerable paraphyly, but phylogenetic analysis suggests a number of subgroups or clades. Whether these clades are best recognized as subgenera within Anolis or separate genera remains a matter of dispute. If the clades are recognized as full genera, about 45 species remain in Anolis, with the remaining moved to Audantia (9 species), Chamaelinorops (7 species), Ctenonotus (more than 40 species), Dactyloa (circa 95 species), Deiroptyx (almost 35 species), Norops (about 190 species), and Xiphosurus (around 15 species). Some of these can be further subdivided. For example, Phenacosaurus was often listed as a full genus in the past, but it is a subclade within Dactyloa (Dactyloa heteroderma species group). Among the subgroups within Anolis are: carolinensis species group (13 species) isolepis species group (three species) In 2011, the green (or Carolina) anole (Anolis carolinensis) became the first reptile to have its complete genome published. Closely related, recently diverged anole lizards exhibited more divergence in thermal biology than in morphology. These anole lizards are thought to have the same structural niche and have similarities in their size and shape, but they inhabit different climatic niches with was variability in temperature and openness of the environment. This suggests that thermal physiology is more associated with recently diverged anole lizards. Ecomorphs Anolis lizards are some of the best examples of both adaptive radiation and convergent evolution. Populations of lizards on isolated islands diverge to occupy separate ecological niches, mostly in terms of the location within the vegetation where they forage (such as in the crown of trees vs. the trunk vs. underlying shrubs). These divergences in habitat are accompanied by morphological changes primarily related to moving on the substrate diameter they most frequently encounter, with twig ecomorphs having short limbs, while trunk ecomorphs have long limbs. In addition, these patterns repeat on numerous islands, with animals in similar habitats converging on similar body forms repeatedly. This demonstrates adaptive radiation can