Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Enamel δ13C and δ18O values for the fossil (a) bovid and (b) suid specimens sampled. These are differentiated by stratigraphic level within the Shungura Formation. Specimens from units C-4 and younger (i.e. <∼2.8 Ma) are significantly enriched in δ13C relative to those from units B-10 and older.
