The following fossils from the geologic age to the prehistorical age are excavated in Yemen. The explanation in brackets is the ages they lived in extinct species. Note that Mya is million years ago. For example, "48.6～40.4 Mya" shows a range between 48.6 and 40.4 million years ago. The time range is shown in the Geological Time Table. The followings are a part of the Evolutionary Tree.

Yemen is a country located in the Arabian Peninsula in West Asia and the tropical zone. It is borderd by Saudi Arabia and Oman, and by the Gulf of Aden to the south and by the Red Sea to the west. The following shows the distribution of animals in Yemen.