prototypal

adjective

Having the nature of, constituting, or serving as a type: archetypal, archetypic, archetypical, classic, classical, model, paradigmatic, prototypic, prototypical, quintessential, representative, typic, typical. See same/different/compare, usual/unusual.

The adjective has one meaning:

Meaning #1: representing or constituting an original type after which other similar things are patterned
  Synonyms: archetypal, archetypical, prototypic, prototypical