And, except the two presented specimens of chamois (Rupicapra rupicapra) collected in Swiss Alps in 1905, all the mammal specimens in the Powell-Cotton Museum were collected in Africa and Asia at the end of the 19th century and the beginning of the 20th century, which came from the following countries or regions: Abyssinia, Algeria, Angola, Cameroon, Central African Republic, Chad, Congo, Ethiopia, Guinea, Guinea, India, Kashmir, Kenya, Morocco, Nigeria, Ogaden, Pakistan, Somalia, South Africa, Sudan, Tanzania, Tibet, Tunisia, Uganda, Zambia and Zimbabwe.
The large mammal specimen collection was built up on the basis of Powell-Cotton's forty years' exploration in Africa and the Indian subcontinent, which is helpful in conducting taxonomic, zoological, ethnobiological/ethnomedical and ethnographic studies.
The specimens collected by Major P. H. G. Powell-Cotton play an important role in scientific studies because the existence of some of the cottoni species are in danger now, for example, the B/W Colobus (Colobus angolensis cottoni) was rated "Least Concern" in The IUCN Red List of Threatened Species published in 2008.
In addition to the measurements and skeletal element information in Professor Wood's 1991 book Koobi Fora Research Project.
Volume 4: Hominid Cranial Remains,[26][27] the complete skeletal element inventory of the chimpanzee and gorilla collections preserved in the Powell-Cotton Museum is also included in this database.