Vellum

Vellum (French vélin, from Latin Vitulus, calf ) is a fine parchment ( membrana Levior Latin ), which is extracted from the skin of calves and calf fetuses. Vellum is more expensive but light-resistant than other types of parchment, and was used for high-quality manuscripts as well as in painting.

In the 14th century a particularly high quality pergamenum abortivum was probably made ​​of stillborn calves.

Some of the high medieval Books of Hours were written and painted on vellum.