Arboreal theory and feet that were capable of grasping. This was also a result of arboreal life, which required a great deal of crawling along branches, and reaching out for fruit and other food. These early primates were likely to have eaten foods found in trees, such as flowers, fruits, berries, gums, leaves, and insects. They are thought to have shifted their diets towards insects in the early Cenozoic era, when insects became more numerous. Arboreal theory This theory is proposed by Grafton Elliott-Smith (1912) who was a neuroanatomist who was chiefly concerned with the emergence of the primate brain. The arboreal
Brilliant arboreal alligator lizard Brilliant arboreal alligator lizard The brilliant arboreal alligator lizard (Abronia gaiophantasma) is a species of lizard endemic to the mountains of east-central Guatemala, from the Sierra de las Minas east to the Chilascó region. It occurs at elevations of 1,600–2,650 m, and can be found in pine–oak and cloud forests of lower montane wet forests. Its extent of occurrence is estimated at only 750 km, and has been declared endangered. Threats to this species include habitat loss from agriculture, and the exportation of ornamental "Chamaedaphne calyculata" plants, conversion of habitats to pine plantations, and intentional fires. It can be found