Although absent in hominoids, the panniculus carnosus is common in non-hominoid primates and non-primate mammals. Stone hand-axes from early hominoids, probably Homo erectus, have been unearthed in Lenggong. Except for gorillas and humans, hominoids are agile climbers of trees. These rocks are famous for their rich fossil vertebrate fauna including many fossil hominoids. Today, there are eight extant genera of hominoids. The only previous musculoskeletal analyses were conducted on hominoids, terror birds, and other dinosaurs. Today, the fusiform gyrus is considered to be specific to hominoids. Most non-human hominoids are rare or endangered. "Griphopithecus" has been consistently grouped with stem hominoids. One remedy is to create a new common name, in this case "hominoids". Colloquially and pop-culturally, the term is ambiguous and sometimes monkey includes non-human hominoids.