The tools and classifications are well described in a number of pages at KOOBI FORA ARCHAEOLOGYArchived 2003-03-21 at the Wayback Machine, which is being maintained at the Maricopa Community Colleges site.
The system is as follows. One "member" is all the layers between two tuffs, or layers of volcanic ash. The member is named from the bottom tuff, considered to begin it. The tuffs are dated. Obviously, a fossil or artifact is dated by the member in which it was found. A complete presentation of the members and their names with dates and a diagram can be found at STRATIGRAPHY OF KOOBI FORAArchived 2003-06-28 at the Wayback Machine and therefore that information is not repeated here.
Much of the literature on the subject since 1991 refers to some pseudo-taxa created by Wood: Homo sp. indet. is "Homo, species indeterminate"; Homo gen. et spec. indet. is "Homo, genus and species indeterminate"; Homo aff. H. erectus is "Homo with affinities to Homo erectus"; H. erectus sensu stricto is "Homo erectus in the strict sense." The subject has moved on since Wood; for example, "Hominids" are now "Hominins." For a review of the book in some detail, see the Book ReviewsArchived 2006-06-24 at the Wayback Machine section of the American Journal of Physical Anthropology S9:499-504 (1992).
Much of the literature on the subject since 1991 refers to some pseudo-taxa created by Wood: Homo sp. indet. is "Homo, species indeterminate"; Homo gen. et spec. indet. is "Homo, genus and species indeterminate"; Homo aff. H. erectus is "Homo with affinities to Homo erectus"; H. erectus sensu stricto is "Homo erectus in the strict sense." The subject has moved on since Wood; for example, "Hominids" are now "Hominins." For a review of the book in some detail, see the Book ReviewsArchived 2006-06-24 at the Wayback Machine section of the American Journal of Physical Anthropology S9:499-504 (1992).
The tools and classifications are well described in a number of pages at KOOBI FORA ARCHAEOLOGYArchived 2003-03-21 at the Wayback Machine, which is being maintained at the Maricopa Community Colleges site.
The system is as follows. One "member" is all the layers between two tuffs, or layers of volcanic ash. The member is named from the bottom tuff, considered to begin it. The tuffs are dated. Obviously, a fossil or artifact is dated by the member in which it was found. A complete presentation of the members and their names with dates and a diagram can be found at STRATIGRAPHY OF KOOBI FORAArchived 2003-06-28 at the Wayback Machine and therefore that information is not repeated here.
