Archaeological Methods: Middle-Level Research, Paleoethnobotany, Zooarchaeology, and Bioarchaeology

Comprehensive practice flashcards defining core vocabulary across archaeological middle-level theory, paleoethnobotany, zooarchaeology, and bioarchaeology.

Middle-Level Theory

A rigorous type of analogy based on causal linkages and uniformitarian principles that explains why a necessary relationship exists between an archaeological object's physical attributes and the human behavior or process inferred from them.

Principle of Uniformitarianism

The methodological premise that the physical, chemical, and biological processes observable in the contemporary world operated in the same manner in the past ("the present is the key to the past").

Formal Analogy

An analogical inference grounded in similarities in the formal physical attributes (shape, dimensions, wear patterns) of archaeological and ethnographic entities, strengthened when multiple ethnographic cases exhibit the same pattern.

Relational Analogy

An analogical inference grounded in cultural continuity (such as the Direct Historical Approach) or shared cultural traditions between an archaeological entity and a living ethnographic descendant society.

Sipapu

A small circular pit excavated into the floor of a subterranean or semi-subterranean kiva, symbolizing the mythical portal through which Pueblo ancestors originally emerged from the underworld into the fourth world.

Formation Processes

The study of the cultural (behavioral) and natural (taphonomic) processes that affect how material remains are created, deposited, modified, and preserved in the archaeological record.

Hudson-Meng Bison Bonebed

An archaeological site in northwest Nebraska dating to $9500$ radiocarbon YBP containing approximately $500$ $Bison\,antiquus$ individuals and $21$ spear points, used to evaluate human butchery models against natural fire-asphyxiation hypotheses.

Experimental Archaeology

Controlled modern experimentation designed to discover mechanical, behavioral, and functional relationships between human actions and the material residue, tool wear, or structural remains they leave behind.

Ethnoarchaeology

The study of living societies to observe material culture, site formation, and discard behaviors while still in their active systemic context, creating bridging arguments to interpret the archaeological past.

Paleoethnobotany

The archaeological subdiscipline focused on recovering and identifying preserved ancient plant remains to investigate past diets, economy, environmental change, and cultural plant-people interactions.

Macrobotanical Remains

Non-microscopic plant specimens recovered from archaeological excavations, such as seeds, nutshells, peach pits, corn kernels, and charcoal fragments.

Flotation

A sediment-processing method that uses water and fine sieving to separate buoyant carbonized plant remains (light fraction) from heavy mineral soil matrix and artifacts (heavy fraction).

Coprolite

Desiccated or mineralized ancient feces (paleofeces) that provides direct biological evidence of human or animal diet, parasites, pollen, hormonal indicators, and ancient DNA.

Packrat Midden

A crystallized nest deposit created by woodrats ($Neotoma\,spp.$) in arid rock shelters within a maximum $100\,\text{m}$ foraging radius, preserving macrobotanical specimens that document local paleoenvironmental shifts.

Palynology

The scientific analysis and taxonomic identification of fossilized microscopic plant pollens and spores to reconstruct past vegetation and environmental changes.

Phytolith

Microscopic silica bodies produced within the cells of living plants that survive decomposition in soil sediments, providing diagnostic architectural markers of plant taxa.

Pollen Diagram

A stratigraphic graph that records changing frequencies and percentages of identified plant taxa pollens through time from core sediment samples taken from lakes, bogs, or archaeological sites.

Alkaloid

A class of naturally occurring, nitrogen-containing organic compounds produced by plants for chemical defense or pollination attraction that produce potent physiological effects when metabolized.

High Performance Liquid Chromatography (HPLC)

A high-precision analytical chemistry technique used to separate, identify, and quantify chemical residues and organic compounds (such as lipids and alkaloids) absorbed in archaeological pottery paste.

Theobromine

A biomarker alkaloid characteristic of $Theobroma\,cacao$ ("Food of the Gods") identified in liquid residue on ceramic cylinder jars from Chaco Canyon and Mesoamerica.

Zooarchaeology

The study and taxonomic identification of animal bones and faunal remains recovered from archaeological sites to reconstruct past human subsistence, hunting strategies, and paleoenvironments.

Faunal Assemblage

The aggregate of animal bones and skeletal parts recovered from an archaeological site, differentiated from paleontological assemblages by potential human involvement in its deposition.

Bioturbation

The physical displacement, perturbation, and reworking of archaeological soil sediments and stratigraphic layers caused by the burrowing activities of animals or plant roots.

Comparative Collection

A curated reference collection of modern, fully identified animal skeletons of both sexes and different developmental stages used to identify archaeological faunal specimens.

Element

The specific anatomical bone or skeletal part of an organism's body, such as a femur, radius, tibia, or vertebra.

Taxon

The biological classification category (species, genus, family, or order) assigned to an archaeological skeletal specimen according to Linnaean taxonomy.

Number of Identified Specimens (NISP)

The total raw count of identified bone fragments or skeletal specimens assigned to a specific taxonomic category in an archaeological assemblage.

Minimum Number of Individuals (MNI)

The smallest number of individual animals required to account for all identified skeletal elements of a given taxon, calculated by tabulating the most common repeated side and anatomical portion.

Annular Rings

Concentric incremental growth rings visible in animal structures such as fish vertebrae, dental cementum, or shells that indicate chronological age and seasonality of death.

Meat Utility Index

A quantitative ranking system that sorts anatomical skeletal parts according to their relative yield in meat, grease, and bone marrow to infer carcass transport and processing strategies.

Green Bone Breakage

The dynamic fracture and flaking pattern characterized by spiral breaks on fresh, unweathered bone, typically produced by percussion impacts during bone marrow extraction.

Bioarchaeology

The archaeological study of the human biological component of the past through osteological analysis, bone chemistry, paleopathology, and ancient DNA.

Burial Population

A discrete set of human interments derived from a limited spatial area and bounded chronological interval, providing a valid sample for paleodemographic analysis.

Ontogeny

The physiological growth, skeletal development, and biological aging of an organism over its lifespan, used to determine juvenile and adult age classes.

Epiphysis

The end of a long bone that is separated from the main shaft (diaphysis) by a cartilaginous growth plate during development and fuses to the shaft at predictable chronological ages, completing fusion by approximately age $25$.

Pubic Symphysis

The anterior midline cartilaginous joint between the left and right pubic bones; morphological remodeling and degenerative changes of its articular face serve as an adult age indicator.

Antemortem Trauma

Bone injury sustained prior to death that displays visible signs of physiological healing, osteological remodeling, or smoothed callus margins.

Perimortem Trauma

Skeletal injury sustained at or near the time of death, characterized by fresh, spiral green-bone fracture patterns and an absence of osteological healing.

Postmortem Damage

Mechanical breaks or weathering sustained by dry bone after death, displaying brittle, right-angled fracture edges and differential color staining across breaks.

Paleopathology

The study of ancient diseases, developmental disorders, nutritional deficiencies, and trauma observable in ancient skeletal remains and mummified tissues.

Pott's Syndrome

Severe spinal degeneration, vertebral collapse, and curvature resulting from secondary skeletal tuberculosis infection, occurring in approximately $25\%$ of advanced cases.

Porotic Hyperostosis

A porous, sponge-like lesion of the cranial vault caused by the expansion of red bone marrow in response to severe iron deficiency anemia or parasitic infection.

Cribra Orbitalia

Porous, sieve-like lesions that perforate the superior roofs of the eye orbits, caused by iron deficiency anemia, malnutrition, or parasitic load.

Harris Lines

Transverse, radiopaque lines of high mineral density visible via X-ray on the ends of long bones, indicating periods of juvenile growth arrest caused by starvation or disease.

Enamel Hypoplasia

Horizontal grooves, pitting, or lines across dental crowns resulting from temporary metabolic disruptions and physiological stress during childhood tooth development.

Dental Caries

Demineralized tooth cavities caused by organic acid byproducts of oral bacterial carbohydrate fermentation, commonly proliferating following the adoption of agricultural staples.

Biomechanics

The structural study of bone morphology and remodeling in response to mechanical stress, used to reconstruct past habitual motor habits and labor practices.

Musculo-skeletal Stress Markers (MSMs)

Prominent crests, ridges, and rugosities developed at skeletal muscle and tendon attachment sites in response to repetitive mechanical load and specialized physical labor.

Paleodemography

The demographic reconstruction of ancient burial populations to evaluate life expectancy at birth, mortality profiles, age cohorts, and overall quality of life.

$C_4$ Photosynthetic Pathway

A photosynthetic pathway utilized by plants like maize and sugarcane that discriminates less against heavy carbon isotopes, yielding significantly enriched $\frac{^{13}\text{C}}{^{12}\text{C}}$ ratios in human bone collagen.

$C_3$ Photosynthetic Pathway

The standard photosynthetic pathway employed by temperate plants such as wheat, rice, and potatoes that selectively depletes $^{13}\text{C}$, resulting in lower $\frac{^{13}\text{C}}{^{12}\text{C}}$ isotopic ratios in skeletal tissue.