Museum of Comparative Zoology

The Museum of Comparative Zoology, formally the Agassiz Museum of Comparative Zoology and often abbreviated MCZ, is a zoology museum on the grounds of Harvard University in Cambridge, Massachusetts. It is one of three natural-history research museums at Harvard, whose public face is the Harvard Museum of Natural History. Its collections hold some 21 million specimens, several thousand of them on rotating public display, and the museum maintains a public database of its zoological collections. Past exhibits have included a fossil sand dollar collected by Charles Darwin in 1834.