There are probably thousands. Most archaeologists specialize in one geographic area or one time period, often both! An archaeologist may also specialize in a particular aspect such as flora or fauna, architecture, ceramics or lithics. There is no end to the possibilities. Some of them are listed below including some theoretical approaches.

Archaeoastronomy, Behavioural archaeology, Biblical archaeology, Bioarchaeolgy, Classical archaeology, Cognitive archaeology, Commercial archaeology, Egyptian archaeology, Environmental archaeology, Ethnoarchaeology, Evolutionary archaeology, Experimental archaeology, Feminist archaeology, Field archaeology, Forensic archaeology, Gender archaeology, Geoarchaeology, Historical archaeology, Industrial archaeology, Interpretitive archaeology, Landscape archaeology, Maritime archaeology, Marxist archaeology, Mediaeval archaeology, Nationalist archaeology, Nautical archaeology, Neo-Marxist archaeology, New Archaeology, Processual archaeology, Post-Processual archaeolgy, Osteoarchaeology, Settlement archaeology, Social archaeology, Underwater archaeology, Urban archaeology, Zooarchaeology

Interpretative archaeology is one of the latest trends regarding Archaeological Theory (i.e. the way we view archaeological data, the methodology and theoretical background that affects our explanations and understanding... anyway it's complicated). Interpretativearchaeology is also known as Post-processual archaeology (i.e. Postmodern) but some might tend to separate them although boundaries between the two are vague. It is a trend that is "against" (actually) but also complementary to (as many leading archaeologists argue) to the previous trend, known as processual archaeology. It appeared in the late 80s - early 90s.

Stephen S. Post has written:

'Excavation of LA 61282, the Airport Road Site' -- subject(s): Antiquities, Excavations (Archaeology), Pueblo Indians, Salvage archaeology

Please define what you mean by the phrase "processual law." Family Law is conducted under the same judicial rules of procedure as all other civil law.

mEGA, dingdong