Wiktionary
n. 1 (context archaeology English) An archaeological site considered the representative example of a particular culture, frequently its first discovery and frequently used as its eponym 2 (context geology English) A geologic site considered the representative example or first discovery of a stratographic level or other feature
Wikipedia
In archaeology a type site (also known as a type-site or typesite) is a site that is considered the model of a particular archaeological culture. For example, the type site of the Pre-Pottery Neolithic A culture is Jericho, in the West Bank. A type site is also often the eponym (the site after which the culture is named). For example, the type site of the pre-Celtic/ Celtic Bronze Age Hallstatt culture is the lakeside village of Hallstatt, Austria.
In geology the term is used similarly for a site considered to be typical of a particular rock formation etc.
A type site contains artifacts, in an assemblage, that are typical of that culture. Type sites are often the first or foundational site discovered about the culture they represent. The use of this term is therefore similar to that of the specimen type in biology (see biological types) or locus typicus ( type locality) in geology.
Usage examples of "type site".
The latter sites are called Clovis sites, named after the type site near the town of Clovis, New Mexico, where their characteristic large stone spearpoints were first recognized.