Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

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.

Google Analytics Dashboard for Early Holocene pecan, Carya illinoensis, in the Mississippi River Valley near Muscatine, Iowa

Early Holocene pecan, Carya illinoensis, in the Mississippi River Valley near Muscatine, Iowa

URI: https://pubs.usgs.gov/publication/70016255

Display as: