Organism: Orangutan Scientific name: Pongo pygmaues

The orangutan has reddish brown hair, unlike the typical chimpanzee and gorilla, It is larger then a chimpanzee but normally smaller then the average gorilla, however they can become larger then them as well on rare occasions

Kingdom: Animalia

Phylum: Chordata

Class: Mammalia

Order: Primates

order: Haplorhini

Family: Hominidae

Subfamily: Ponginae

Genus: Pongo

The two species of Orangutan first appeared 400,000 years ago

A homologous structure is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor.

The most recent ancestor of the Orangutan was discovered to be the Sivapithecus

Comparative embryology is the branch of embryology that compares and contrasts embryos of different species. It is used to show how all animals are related. Many things are compared (such as whether or not the organism has a notochord or gill arches). (Definition)

Definition of a vestigial Structure: "A structure in an organism that has lost all or most of its original function in the course of evolution, such as human appendixes."