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.
Extinction rates for cultural groups from five regions in New Guinea. Adapted from Soltis et al. (1995).
| region | number of groups | number of social extinctions | number of years | % groups extinct every 25 years |
|---|---|---|---|---|
| Mae Enga | 14 | 5 | 50 | 17.9 |
| Maring | 13 | 1 | 25 | 7.7 |
| Mendi | 9 | 3 | 50 | 16.6 |
| Fore/Usurufa | 8–24 | 1 | 10 | 31.2–10.4 |
| Tor | 26 | 4 | 40 | 9.6 |
