One of the tasks of those involved in the care for and use of a scientific zoological collection is to make the existence of its contents known to taxonomists and other colleagues all over the world. While data on more and more collections at large are being made available on the Internet, particular selections still have to be made by the users of those data. Moreover, not all data bases involved have the same design or do contain the same details per specimen. For example, it is not easy to construe an annotated list of the type specimens present in a particular collection. Furthermore, not in all cases do original descriptions of species mention all the available data.
The present paper provides a list of mammal types and their full data in the collections of the former Zoological Museum of the University of Amsterdam (ZMA). As from the 28th of January 2010, the ZMA has merged with the National Museum of Natural History Naturalis in Leiden (the former Rijksmuseum van Natuurlijke Historie, RMNH) and the National Herbarium of the Netherlands, together constituting the Netherlands Centre for Biodiversity Naturalis.