exemplar

1. Something fit to be imitated; an ideal, a worthy model or role model: a desirable example. · Michelangelo's "David" is an exemplar of Renaissance sculpture.
2. Something typical or representative; an example that typifies its class.
3. A pattern after which others should be made; an archetype.
4. A well-known use of a scientific theory.
5. A manuscript used by a scribe to make a handwritten copy; the original document to be reproduced in a copy machine.
6. A copy of a book or piece of writing.

Plural exemplars