M. Mansell, G. Jones, and F. Luo provided invaluable computer assistance in developing the database. Abbreviations used in the text are listed below. Formation Where the formation name is known, it is listed. Where the formation name has been revised, the new name is given. Abbreviations used in formation names are listed below.
Every date is linked to a region in New Mexico.
The purpose of designating regions is to facilitate searches in the database. The location is more specific than the region to help researchers locate a particular sample. We have tried to determine latitude and longitude for every recorded date. Over sixty percent of the dates had locations reported by latitude and longitude. Ten percent were reported by Section, Township, and Range.