<p> An unlocalised collection of ammonites from West New Guinea is described and identified. These identifications afford the basis for determining the stratigraphic position of the fauna, which ext ends from the Sowerbyi Zone of the Middle Jurassic to the Upper Valanginian. The relations of the fauna to other ammonite faunas are described and indicate the ammonites in the present collection to be most closely related to the faunas of the Pacific Realm and Ethiopian province of the Tethyan Realm. A new genus, Sulaites is described and possible sexual dimorphism is detected therein. </p> / Thesis / Master of Science (MSc)