Sign up for Lesson Plans, discounts & more!

not sure what I found

by Mike Marshall
(central Indiana)

while looking for geodes I stumbled on this

Comments for not sure what I found

Click here to add your own comments

Hiding trilobite?
by: Doug

This looks like the fossil is still hiding. In order to reveal the identy of your specimen we need some more clues!

Most of Indiana is Paleozoic rock. Where you found this in central Indiana is important. A few miles one way or the other amounts to 10's or even hundreds of millions of years in the age of the rocks present. Take a look at the map on this page:
See if you can tell which band of color represents where you found your specimen. Take that info to this page to learn more about the time that is represented there.

Now check out this page:
These are common fossils found in Indiana.

The trouble is that none of these look like the fossil hiding in your specimen. As I said before we need more clues. The one fossil that is known in Indiana that may be in your rock is a trilobite. This is what I thought of when I looked at your pictures. Trilobites are not found everywhere in Indiana. They are more likely as you go closer toward Cincinnati. They are known to be found near Oldenburg. This is a photo of a trilobite for sale on our sister site
What do you think?

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to fossil-identification.

Check out some of the Educational Materials for sale on our sister site

Share this page:
Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.

interested in more? If so, you may want to check out our other sites: - Our online fossil and mineral rock shop. - An educational site about rocks, minerals, and geology.