image
Crinoid
Crinoids are some of the oldest fossils on the planet and have been dated to around 485 million years ago! (Depth: approximately 2,000 meters.)
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.