Age assignments were taken from the original publications, then updated to conform to the most recent accepted age divisions based on the trail of information that could be followed through the literature regarding the stratigraphic position of specimens. Inasmuch as possible, actual stratigraphic context was considered in making age assignments.

Radiocarbon ages are given as radiocarbon years, not as calibrated ages.

Age criteria for different cultural groups for FAUNMAP I were taken from Graham and Semken (1987), Purdue and Styles (1987), and Frison (1978).

Use of this resource in publications should be cited as:
Graham, R.W., and E.L. Lundelius, Jr. 2010. FAUNMAP II: New data for North America with a temporal extension for the Blancan, Irvingtonian and early Rancholabrean. FAUNMAP II Database, version 1.0 this website.